diff --git a/bin/plinth b/bin/plinth
index 22548efe1..e81afab03 100755
--- a/bin/plinth
+++ b/bin/plinth
@@ -1,20 +1,5 @@
 #!/usr/bin/python3
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import plinth.__main__
 
diff --git a/conftest.py b/conftest.py
index d4606b9b2..5066e23c5 100644
--- a/conftest.py
+++ b/conftest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 pytest configuration for all tests.
 """
diff --git a/doc/dev/conf.py b/doc/dev/conf.py
index bcc85233d..db3c54f9f 100644
--- a/doc/dev/conf.py
+++ b/doc/dev/conf.py
@@ -1,20 +1,5 @@
 # -*- coding: utf-8 -*-
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Configuration file for the Sphinx documentation builder.
 
diff --git a/functional_tests/step_definitions/application.py b/functional_tests/step_definitions/application.py
index 7ed5750f3..78b041b29 100644
--- a/functional_tests/step_definitions/application.py
+++ b/functional_tests/step_definitions/application.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import pytest
 import splinter
diff --git a/functional_tests/step_definitions/interface.py b/functional_tests/step_definitions/interface.py
index 376e5c30d..0e904d35a 100644
--- a/functional_tests/step_definitions/interface.py
+++ b/functional_tests/step_definitions/interface.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from pytest_bdd import given, parsers, then, when
 
diff --git a/functional_tests/step_definitions/service.py b/functional_tests/step_definitions/service.py
index 9b6f351d9..83a0a0017 100644
--- a/functional_tests/step_definitions/service.py
+++ b/functional_tests/step_definitions/service.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from pytest_bdd import parsers, then
 
diff --git a/functional_tests/step_definitions/site.py b/functional_tests/step_definitions/site.py
index 8a6b89dbe..90009615f 100644
--- a/functional_tests/step_definitions/site.py
+++ b/functional_tests/step_definitions/site.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from pytest_bdd import given, parsers, then, when
 
diff --git a/functional_tests/step_definitions/system.py b/functional_tests/step_definitions/system.py
index 5d4aaf6da..dd8e5d2ae 100644
--- a/functional_tests/step_definitions/system.py
+++ b/functional_tests/step_definitions/system.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import os
 import time
diff --git a/functional_tests/support/__init__.py b/functional_tests/support/__init__.py
index 7b8b633d5..9b1d7becd 100644
--- a/functional_tests/support/__init__.py
+++ b/functional_tests/support/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import configparser
 import os
diff --git a/functional_tests/support/application.py b/functional_tests/support/application.py
index b89b1c75e..33553b8e8 100644
--- a/functional_tests/support/application.py
+++ b/functional_tests/support/application.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import contextlib
 import os
diff --git a/functional_tests/support/interface.py b/functional_tests/support/interface.py
index b14b29685..c9a4f23d9 100644
--- a/functional_tests/support/interface.py
+++ b/functional_tests/support/interface.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import logging
 import random
diff --git a/functional_tests/support/service.py b/functional_tests/support/service.py
index f751c36f8..1ef4470a8 100644
--- a/functional_tests/support/service.py
+++ b/functional_tests/support/service.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from contextlib import contextmanager
 import time
diff --git a/functional_tests/support/site.py b/functional_tests/support/site.py
index c715b4fd4..1fe6a1102 100644
--- a/functional_tests/support/site.py
+++ b/functional_tests/support/site.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import logging
 import os
diff --git a/functional_tests/support/system.py b/functional_tests/support/system.py
index e579ca532..d6e5f7f42 100644
--- a/functional_tests/support/system.py
+++ b/functional_tests/support/system.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import tempfile
 from urllib.parse import urlparse
diff --git a/functional_tests/test_plinth.py b/functional_tests/test_plinth.py
index 1534a3291..8a61c371e 100644
--- a/functional_tests/test_plinth.py
+++ b/functional_tests/test_plinth.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import pytest
 
diff --git a/manage.py b/manage.py
index 7954c9da5..fd684943b 100644
--- a/manage.py
+++ b/manage.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Dummy file to help pytest-django path detection.
 
diff --git a/plinth/__init__.py b/plinth/__init__.py
index 5e73e64c0..566b9b24d 100644
--- a/plinth/__init__.py
+++ b/plinth/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Package init file.
 """
diff --git a/plinth/__main__.py b/plinth/__main__.py
index b0373fc31..e594cc0fb 100644
--- a/plinth/__main__.py
+++ b/plinth/__main__.py
@@ -1,20 +1,5 @@
 #!/usr/bin/python3
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import argparse
 import importlib
diff --git a/plinth/action_utils.py b/plinth/action_utils.py
index 1a1b87c49..13842fe4a 100644
--- a/plinth/action_utils.py
+++ b/plinth/action_utils.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Python action utility functions.
 """
diff --git a/plinth/actions.py b/plinth/actions.py
index 94b4e4255..ccbf89426 100644
--- a/plinth/actions.py
+++ b/plinth/actions.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """Run specified actions.
 
 Actions run commands with this contract (version 1.1):
diff --git a/plinth/app.py b/plinth/app.py
index 5e125f620..2f762b056 100644
--- a/plinth/app.py
+++ b/plinth/app.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Base class for all Freedombox applications.
 """
diff --git a/plinth/axes_app_config.py b/plinth/axes_app_config.py
index 32696d680..e13a76b02 100644
--- a/plinth/axes_app_config.py
+++ b/plinth/axes_app_config.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Overridden AppConfig from django-axes to avoid monkey-patched LoginView
 """
diff --git a/plinth/cfg.py b/plinth/cfg.py
index 329dd92e6..f3ebd3576 100644
--- a/plinth/cfg.py
+++ b/plinth/cfg.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import configparser
 import logging
diff --git a/plinth/clients.py b/plinth/clients.py
index 9b786ea05..b52c19694 100644
--- a/plinth/clients.py
+++ b/plinth/clients.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Utility methods for providing client information.
 """
diff --git a/plinth/context_processors.py b/plinth/context_processors.py
index 1b3edfc70..a8ff94709 100644
--- a/plinth/context_processors.py
+++ b/plinth/context_processors.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Django context processors to provide common data to templates.
 """
diff --git a/plinth/daemon.py b/plinth/daemon.py
index d48166460..4644d17b2 100644
--- a/plinth/daemon.py
+++ b/plinth/daemon.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Component for managing a background daemon or any systemd unit.
 """
diff --git a/plinth/dbus.py b/plinth/dbus.py
index 884608a64..963ae4d2c 100644
--- a/plinth/dbus.py
+++ b/plinth/dbus.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Expose some API over D-Bus.
 """
diff --git a/plinth/errors.py b/plinth/errors.py
index 93adb8fcd..c6dd4cf36 100644
--- a/plinth/errors.py
+++ b/plinth/errors.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Project specific errors
 """
diff --git a/plinth/forms.py b/plinth/forms.py
index 7b0fa18df..8fbda5983 100644
--- a/plinth/forms.py
+++ b/plinth/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Common forms for use by modules.
 """
diff --git a/plinth/frontpage.py b/plinth/frontpage.py
index 664249d6e..171fb021d 100644
--- a/plinth/frontpage.py
+++ b/plinth/frontpage.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Manage application shortcuts on front page.
 """
diff --git a/plinth/glib.py b/plinth/glib.py
index 9f590bbba..dc535defe 100644
--- a/plinth/glib.py
+++ b/plinth/glib.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Module to handle glib main loop and provide asynchronous utilities.
 """
diff --git a/plinth/kvstore.py b/plinth/kvstore.py
index 7d2d1408b..a61db2e8c 100644
--- a/plinth/kvstore.py
+++ b/plinth/kvstore.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Simple key/value store using Django models
 """
diff --git a/plinth/log.py b/plinth/log.py
index 3e0819141..f6392168a 100644
--- a/plinth/log.py
+++ b/plinth/log.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Setup logging for the application.
 """
diff --git a/plinth/menu.py b/plinth/menu.py
index fdeaa0ef1..ea7d31387 100644
--- a/plinth/menu.py
+++ b/plinth/menu.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.urls import reverse, reverse_lazy
 
diff --git a/plinth/middleware.py b/plinth/middleware.py
index 83973303b..77e11d64e 100644
--- a/plinth/middleware.py
+++ b/plinth/middleware.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Common Django middleware.
 """
diff --git a/plinth/migrations/0001_initial.py b/plinth/migrations/0001_initial.py
index 3208d1a1c..88ad4c7b1 100644
--- a/plinth/migrations/0001_initial.py
+++ b/plinth/migrations/0001_initial.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 #
 # Generated by Django 1.9 on 2015-12-04 07:27
diff --git a/plinth/migrations/0003_merge_firstboot_completed_fields.py b/plinth/migrations/0003_merge_firstboot_completed_fields.py
index fd615d6d1..6f6b4a0c8 100644
--- a/plinth/migrations/0003_merge_firstboot_completed_fields.py
+++ b/plinth/migrations/0003_merge_firstboot_completed_fields.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Remove the deprecated KVStore entries 'setup_state' and 'firstboot_state',
 and only use the new entry 'firstboot_completed' instead.
diff --git a/plinth/migrations/0005_storednotification.py b/plinth/migrations/0005_storednotification.py
index 2e62dac37..aeddc717c 100644
--- a/plinth/migrations/0005_storednotification.py
+++ b/plinth/migrations/0005_storednotification.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 #
 # Generated by Django 2.2.6 on 2020-01-29 03:17
diff --git a/plinth/models.py b/plinth/models.py
index 9e12d6c46..f0820dd6b 100644
--- a/plinth/models.py
+++ b/plinth/models.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Django models for the main application
 """
diff --git a/plinth/module_loader.py b/plinth/module_loader.py
index 0caf2f1f8..8d019eec2 100644
--- a/plinth/module_loader.py
+++ b/plinth/module_loader.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Discover, load and manage FreedomBox applications.
 """
diff --git a/plinth/modules/apache/__init__.py b/plinth/modules/apache/__init__.py
index 29d81a2e4..7028e955f 100644
--- a/plinth/modules/apache/__init__.py
+++ b/plinth/modules/apache/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for Apache server.
 """
diff --git a/plinth/modules/apache/components.py b/plinth/modules/apache/components.py
index 61dc84a42..b6e0afccb 100644
--- a/plinth/modules/apache/components.py
+++ b/plinth/modules/apache/components.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 App component for other apps to use Apache configuration functionality.
 """
diff --git a/plinth/modules/apache/tests/test_components.py b/plinth/modules/apache/tests/test_components.py
index 5a5c890da..bdfaaf516 100644
--- a/plinth/modules/apache/tests/test_components.py
+++ b/plinth/modules/apache/tests/test_components.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for webserver components.
 """
diff --git a/plinth/modules/apache/urls.py b/plinth/modules/apache/urls.py
index ecd727c94..e018e02b8 100644
--- a/plinth/modules/apache/urls.py
+++ b/plinth/modules/apache/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Apache module.
 """
diff --git a/plinth/modules/api/__init__.py b/plinth/modules/api/__init__.py
index f14ded525..a1999a72a 100644
--- a/plinth/modules/api/__init__.py
+++ b/plinth/modules/api/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for api for android app.
 """
diff --git a/plinth/modules/api/urls.py b/plinth/modules/api/urls.py
index 8b4d409f9..612860ab8 100644
--- a/plinth/modules/api/urls.py
+++ b/plinth/modules/api/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the plinth api for android app.
 """
diff --git a/plinth/modules/api/views.py b/plinth/modules/api/views.py
index 536f4056f..9fb5e82b9 100644
--- a/plinth/modules/api/views.py
+++ b/plinth/modules/api/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for api for android app.
 """
diff --git a/plinth/modules/avahi/__init__.py b/plinth/modules/avahi/__init__.py
index 18a536a18..8f9fee070 100644
--- a/plinth/modules/avahi/__init__.py
+++ b/plinth/modules/avahi/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for service discovery.
 """
diff --git a/plinth/modules/avahi/manifest.py b/plinth/modules/avahi/manifest.py
index a3e02e082..448340c67 100644
--- a/plinth/modules/avahi/manifest.py
+++ b/plinth/modules/avahi/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for avahi.
 """
diff --git a/plinth/modules/avahi/urls.py b/plinth/modules/avahi/urls.py
index 685d49446..d8b9c8630 100644
--- a/plinth/modules/avahi/urls.py
+++ b/plinth/modules/avahi/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the service discovery module.
 """
diff --git a/plinth/modules/backups/__init__.py b/plinth/modules/backups/__init__.py
index 49520e746..3e81ebab7 100644
--- a/plinth/modules/backups/__init__.py
+++ b/plinth/modules/backups/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to manage backup archives.
 """
diff --git a/plinth/modules/backups/api.py b/plinth/modules/backups/api.py
index 9e72ebc3b..59046fa15 100644
--- a/plinth/modules/backups/api.py
+++ b/plinth/modules/backups/api.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 API for performing backup and restore.
 
diff --git a/plinth/modules/backups/decorators.py b/plinth/modules/backups/decorators.py
index 03fae602f..fd500457e 100644
--- a/plinth/modules/backups/decorators.py
+++ b/plinth/modules/backups/decorators.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Decorators for the backup views.
 """
diff --git a/plinth/modules/backups/errors.py b/plinth/modules/backups/errors.py
index 019b548d1..ac5f76dd1 100644
--- a/plinth/modules/backups/errors.py
+++ b/plinth/modules/backups/errors.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from plinth.errors import PlinthError
 
diff --git a/plinth/modules/backups/forms.py b/plinth/modules/backups/forms.py
index e4532ddd7..8ff0393a4 100644
--- a/plinth/modules/backups/forms.py
+++ b/plinth/modules/backups/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for backups module.
 """
diff --git a/plinth/modules/backups/manifest.py b/plinth/modules/backups/manifest.py
index dc999ee0a..1c7cc31eb 100644
--- a/plinth/modules/backups/manifest.py
+++ b/plinth/modules/backups/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for backups.
 """
diff --git a/plinth/modules/backups/repository.py b/plinth/modules/backups/repository.py
index 7b57773b6..01bd6b712 100644
--- a/plinth/modules/backups/repository.py
+++ b/plinth/modules/backups/repository.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Remote and local Borg backup repositories
 """
diff --git a/plinth/modules/backups/store.py b/plinth/modules/backups/store.py
index 4da56f1c6..eaf7e30eb 100644
--- a/plinth/modules/backups/store.py
+++ b/plinth/modules/backups/store.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Manage storage of repository information in KVStore table in database.
 """
diff --git a/plinth/modules/backups/tests/test_api.py b/plinth/modules/backups/tests/test_api.py
index c8436a7b3..9d11e38ea 100644
--- a/plinth/modules/backups/tests/test_api.py
+++ b/plinth/modules/backups/tests/test_api.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Tests for backups module API.
 """
diff --git a/plinth/modules/backups/tests/test_backups.py b/plinth/modules/backups/tests/test_backups.py
index 6000477b8..92fcdb63c 100644
--- a/plinth/modules/backups/tests/test_backups.py
+++ b/plinth/modules/backups/tests/test_backups.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test the backups action script.
 """
diff --git a/plinth/modules/backups/tests/test_ssh_remotes.py b/plinth/modules/backups/tests/test_ssh_remotes.py
index 4f514fb1b..5bc6688a8 100644
--- a/plinth/modules/backups/tests/test_ssh_remotes.py
+++ b/plinth/modules/backups/tests/test_ssh_remotes.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Tests for SSH remotes for backups.
 """
diff --git a/plinth/modules/backups/tests/test_store.py b/plinth/modules/backups/tests/test_store.py
index a6e6ac044..ee18ed0dd 100644
--- a/plinth/modules/backups/tests/test_store.py
+++ b/plinth/modules/backups/tests/test_store.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test network storage.
 """
diff --git a/plinth/modules/backups/tests/test_validators.py b/plinth/modules/backups/tests/test_validators.py
index e23bb8bf0..7d3a1f859 100644
--- a/plinth/modules/backups/tests/test_validators.py
+++ b/plinth/modules/backups/tests/test_validators.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Tests for form field validators in backups.
 """
diff --git a/plinth/modules/backups/urls.py b/plinth/modules/backups/urls.py
index e3a3cce46..098c6697d 100644
--- a/plinth/modules/backups/urls.py
+++ b/plinth/modules/backups/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the backups module.
 """
diff --git a/plinth/modules/backups/views.py b/plinth/modules/backups/views.py
index dbe3a20fc..66d1915bf 100644
--- a/plinth/modules/backups/views.py
+++ b/plinth/modules/backups/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for the backups app.
 """
diff --git a/plinth/modules/bind/__init__.py b/plinth/modules/bind/__init__.py
index 9b5d68f4b..850cbb353 100644
--- a/plinth/modules/bind/__init__.py
+++ b/plinth/modules/bind/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure BIND server.
 """
diff --git a/plinth/modules/bind/forms.py b/plinth/modules/bind/forms.py
index 955ed4db3..75dc51151 100644
--- a/plinth/modules/bind/forms.py
+++ b/plinth/modules/bind/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for BIND module.
 """
diff --git a/plinth/modules/bind/manifest.py b/plinth/modules/bind/manifest.py
index e6d8c619c..546eb044b 100644
--- a/plinth/modules/bind/manifest.py
+++ b/plinth/modules/bind/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for bind.
 """
diff --git a/plinth/modules/bind/tests/test_bind.py b/plinth/modules/bind/tests/test_bind.py
index 7c0b0410d..94d8743bd 100644
--- a/plinth/modules/bind/tests/test_bind.py
+++ b/plinth/modules/bind/tests/test_bind.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test actions for configuring bind
 """
diff --git a/plinth/modules/bind/urls.py b/plinth/modules/bind/urls.py
index b679873ac..0deed4447 100644
--- a/plinth/modules/bind/urls.py
+++ b/plinth/modules/bind/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the BIND module.
 """
diff --git a/plinth/modules/bind/views.py b/plinth/modules/bind/views.py
index ba2ad65a4..165667743 100644
--- a/plinth/modules/bind/views.py
+++ b/plinth/modules/bind/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for BIND module.
 """
diff --git a/plinth/modules/cockpit/__init__.py b/plinth/modules/cockpit/__init__.py
index 0475f1b65..fe2d4da31 100644
--- a/plinth/modules/cockpit/__init__.py
+++ b/plinth/modules/cockpit/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure Cockpit.
 """
diff --git a/plinth/modules/cockpit/manifest.py b/plinth/modules/cockpit/manifest.py
index 79878ab58..1a15da82b 100644
--- a/plinth/modules/cockpit/manifest.py
+++ b/plinth/modules/cockpit/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for cockpit.
 """
diff --git a/plinth/modules/cockpit/urls.py b/plinth/modules/cockpit/urls.py
index 78ef23fae..2326ce615 100644
--- a/plinth/modules/cockpit/urls.py
+++ b/plinth/modules/cockpit/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for Cockpit module.
 """
diff --git a/plinth/modules/cockpit/utils.py b/plinth/modules/cockpit/utils.py
index b54a9a7c7..385642174 100644
--- a/plinth/modules/cockpit/utils.py
+++ b/plinth/modules/cockpit/utils.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Minor utility methods for Cockpit.
 """
diff --git a/plinth/modules/cockpit/views.py b/plinth/modules/cockpit/views.py
index cf21bc286..3be255cfe 100644
--- a/plinth/modules/cockpit/views.py
+++ b/plinth/modules/cockpit/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for the Cockpit module
 """
diff --git a/plinth/modules/config/__init__.py b/plinth/modules/config/__init__.py
index 33029161b..015eff837 100644
--- a/plinth/modules/config/__init__.py
+++ b/plinth/modules/config/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for basic system configuration.
 """
diff --git a/plinth/modules/config/forms.py b/plinth/modules/config/forms.py
index cd01e6c1e..70f4dfed1 100644
--- a/plinth/modules/config/forms.py
+++ b/plinth/modules/config/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for basic system configuration
 """
diff --git a/plinth/modules/config/tests/test_config.py b/plinth/modules/config/tests/test_config.py
index aab9e6f85..277901d08 100644
--- a/plinth/modules/config/tests/test_config.py
+++ b/plinth/modules/config/tests/test_config.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Tests for config module.
 """
diff --git a/plinth/modules/config/urls.py b/plinth/modules/config/urls.py
index 5d4570bba..b5704fc78 100644
--- a/plinth/modules/config/urls.py
+++ b/plinth/modules/config/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Configuration module
 """
diff --git a/plinth/modules/config/views.py b/plinth/modules/config/views.py
index efc11a50e..96511beb8 100644
--- a/plinth/modules/config/views.py
+++ b/plinth/modules/config/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox views for basic system configuration.
 """
diff --git a/plinth/modules/coquelicot/__init__.py b/plinth/modules/coquelicot/__init__.py
index 787d468a9..1501cde6a 100644
--- a/plinth/modules/coquelicot/__init__.py
+++ b/plinth/modules/coquelicot/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Plinth module to configure coquelicot.
 """
diff --git a/plinth/modules/coquelicot/forms.py b/plinth/modules/coquelicot/forms.py
index 5a0db44ca..6b4b7d96a 100644
--- a/plinth/modules/coquelicot/forms.py
+++ b/plinth/modules/coquelicot/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Plinth form for configuring Coquelicot.
 """
diff --git a/plinth/modules/coquelicot/manifest.py b/plinth/modules/coquelicot/manifest.py
index c6e3483dd..c128a3fbf 100644
--- a/plinth/modules/coquelicot/manifest.py
+++ b/plinth/modules/coquelicot/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/coquelicot/urls.py b/plinth/modules/coquelicot/urls.py
index fbb78b8eb..a08863c94 100644
--- a/plinth/modules/coquelicot/urls.py
+++ b/plinth/modules/coquelicot/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the coquelicot module.
 """
diff --git a/plinth/modules/coquelicot/views.py b/plinth/modules/coquelicot/views.py
index 74ca36997..7c62467f1 100644
--- a/plinth/modules/coquelicot/views.py
+++ b/plinth/modules/coquelicot/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Plinth views for Coquelicot.
 """
diff --git a/plinth/modules/datetime/__init__.py b/plinth/modules/datetime/__init__.py
index c881b10b7..00b978409 100644
--- a/plinth/modules/datetime/__init__.py
+++ b/plinth/modules/datetime/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure system date and time.
 """
diff --git a/plinth/modules/datetime/forms.py b/plinth/modules/datetime/forms.py
index 654f2a4c5..6602d1664 100644
--- a/plinth/modules/datetime/forms.py
+++ b/plinth/modules/datetime/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for configuring date and time
 """
diff --git a/plinth/modules/datetime/manifest.py b/plinth/modules/datetime/manifest.py
index ec6957d5e..627f79b76 100644
--- a/plinth/modules/datetime/manifest.py
+++ b/plinth/modules/datetime/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for datetime.
 """
diff --git a/plinth/modules/datetime/urls.py b/plinth/modules/datetime/urls.py
index 2ca059443..35703bbde 100644
--- a/plinth/modules/datetime/urls.py
+++ b/plinth/modules/datetime/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the date and time module
 """
diff --git a/plinth/modules/datetime/views.py b/plinth/modules/datetime/views.py
index b90fda355..a6a71f251 100644
--- a/plinth/modules/datetime/views.py
+++ b/plinth/modules/datetime/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for configuring date and time.
 """
diff --git a/plinth/modules/deluge/__init__.py b/plinth/modules/deluge/__init__.py
index aa199d13d..7ca3add71 100644
--- a/plinth/modules/deluge/__init__.py
+++ b/plinth/modules/deluge/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure a Deluge web client.
 """
diff --git a/plinth/modules/deluge/forms.py b/plinth/modules/deluge/forms.py
index b786a803e..e85dc8792 100644
--- a/plinth/modules/deluge/forms.py
+++ b/plinth/modules/deluge/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for Deluge app.
 """
diff --git a/plinth/modules/deluge/manifest.py b/plinth/modules/deluge/manifest.py
index 28857e553..4e8ed3cdb 100644
--- a/plinth/modules/deluge/manifest.py
+++ b/plinth/modules/deluge/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/deluge/urls.py b/plinth/modules/deluge/urls.py
index 8b4a72fb6..74e804d0f 100644
--- a/plinth/modules/deluge/urls.py
+++ b/plinth/modules/deluge/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Deluge module.
 """
diff --git a/plinth/modules/deluge/views.py b/plinth/modules/deluge/views.py
index 9d5f8e4fe..78576fbae 100644
--- a/plinth/modules/deluge/views.py
+++ b/plinth/modules/deluge/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Django views for Deluge.
 """
diff --git a/plinth/modules/diagnostics/__init__.py b/plinth/modules/diagnostics/__init__.py
index 4af769665..d79896c83 100644
--- a/plinth/modules/diagnostics/__init__.py
+++ b/plinth/modules/diagnostics/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for system diagnostics.
 """
diff --git a/plinth/modules/diagnostics/diagnostics.py b/plinth/modules/diagnostics/diagnostics.py
index 217bbb552..81f854319 100644
--- a/plinth/modules/diagnostics/diagnostics.py
+++ b/plinth/modules/diagnostics/diagnostics.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for running diagnostics.
 """
diff --git a/plinth/modules/diagnostics/manifest.py b/plinth/modules/diagnostics/manifest.py
index 6efce08d1..2eee842ca 100644
--- a/plinth/modules/diagnostics/manifest.py
+++ b/plinth/modules/diagnostics/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for diagnostics.
 """
diff --git a/plinth/modules/diagnostics/urls.py b/plinth/modules/diagnostics/urls.py
index 055baa9dc..e4c34e463 100644
--- a/plinth/modules/diagnostics/urls.py
+++ b/plinth/modules/diagnostics/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Diagnostics module
 """
diff --git a/plinth/modules/diaspora/__init__.py b/plinth/modules/diaspora/__init__.py
index f7f547d7a..660e89f29 100644
--- a/plinth/modules/diaspora/__init__.py
+++ b/plinth/modules/diaspora/__init__.py
@@ -1,18 +1,4 @@
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import os
 
diff --git a/plinth/modules/diaspora/forms.py b/plinth/modules/diaspora/forms.py
index 2e97ae7e6..153fb5cf1 100644
--- a/plinth/modules/diaspora/forms.py
+++ b/plinth/modules/diaspora/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for configuring diaspora*
 """
diff --git a/plinth/modules/diaspora/manifest.py b/plinth/modules/diaspora/manifest.py
index d98cda5d9..b44ecae9c 100644
--- a/plinth/modules/diaspora/manifest.py
+++ b/plinth/modules/diaspora/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/diaspora/tests/__init__.py b/plinth/modules/diaspora/tests/__init__.py
index 3462e5496..1652e34b1 100644
--- a/plinth/modules/diaspora/tests/__init__.py
+++ b/plinth/modules/diaspora/tests/__init__.py
@@ -1,16 +1 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
diff --git a/plinth/modules/diaspora/tests/test_apache_config.py b/plinth/modules/diaspora/tests/test_apache_config.py
index a1c5c1ad1..ce9ee2d5f 100644
--- a/plinth/modules/diaspora/tests/test_apache_config.py
+++ b/plinth/modules/diaspora/tests/test_apache_config.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test Apache configuration generation for diaspora*
 """
diff --git a/plinth/modules/diaspora/urls.py b/plinth/modules/diaspora/urls.py
index 201234727..710691956 100644
--- a/plinth/modules/diaspora/urls.py
+++ b/plinth/modules/diaspora/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the diaspora module
 """
diff --git a/plinth/modules/diaspora/views.py b/plinth/modules/diaspora/views.py
index 03598977d..1635b5f28 100644
--- a/plinth/modules/diaspora/views.py
+++ b/plinth/modules/diaspora/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for the diaspora module
 """
diff --git a/plinth/modules/dynamicdns/__init__.py b/plinth/modules/dynamicdns/__init__.py
index 80ccbecc0..f254f52a5 100644
--- a/plinth/modules/dynamicdns/__init__.py
+++ b/plinth/modules/dynamicdns/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure ez-ipupdate client.
 """
diff --git a/plinth/modules/dynamicdns/forms.py b/plinth/modules/dynamicdns/forms.py
index 397fc6c06..918bf7f5e 100644
--- a/plinth/modules/dynamicdns/forms.py
+++ b/plinth/modules/dynamicdns/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for the dynamicsdns module.
 """
diff --git a/plinth/modules/dynamicdns/manifest.py b/plinth/modules/dynamicdns/manifest.py
index 3843d27ff..e9c1734e2 100644
--- a/plinth/modules/dynamicdns/manifest.py
+++ b/plinth/modules/dynamicdns/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from plinth.modules.backups.api import validate as validate_backup
 
diff --git a/plinth/modules/dynamicdns/urls.py b/plinth/modules/dynamicdns/urls.py
index ccd209e45..c5703604d 100644
--- a/plinth/modules/dynamicdns/urls.py
+++ b/plinth/modules/dynamicdns/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the dynamicdns module
 """
diff --git a/plinth/modules/dynamicdns/views.py b/plinth/modules/dynamicdns/views.py
index 8f2c80a82..6b3bd5193 100644
--- a/plinth/modules/dynamicdns/views.py
+++ b/plinth/modules/dynamicdns/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for the dynamicsdns module.
 """
diff --git a/plinth/modules/ejabberd/__init__.py b/plinth/modules/ejabberd/__init__.py
index 9439dce70..94ee504cc 100644
--- a/plinth/modules/ejabberd/__init__.py
+++ b/plinth/modules/ejabberd/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure ejabberd server.
 """
diff --git a/plinth/modules/ejabberd/forms.py b/plinth/modules/ejabberd/forms.py
index b20c930b4..98c052363 100644
--- a/plinth/modules/ejabberd/forms.py
+++ b/plinth/modules/ejabberd/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for configuring Ejabberd.
 """
diff --git a/plinth/modules/ejabberd/manifest.py b/plinth/modules/ejabberd/manifest.py
index 0ba291e82..e7a1f9241 100644
--- a/plinth/modules/ejabberd/manifest.py
+++ b/plinth/modules/ejabberd/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/ejabberd/urls.py b/plinth/modules/ejabberd/urls.py
index dbb8ddd7e..a397039b0 100644
--- a/plinth/modules/ejabberd/urls.py
+++ b/plinth/modules/ejabberd/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URL for the Ejabberd module
 """
diff --git a/plinth/modules/ejabberd/views.py b/plinth/modules/ejabberd/views.py
index f7817d4b8..bcfae851c 100644
--- a/plinth/modules/ejabberd/views.py
+++ b/plinth/modules/ejabberd/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for the Ejabberd module
 """
diff --git a/plinth/modules/firewall/__init__.py b/plinth/modules/firewall/__init__.py
index 15d6521cb..b54b479aa 100644
--- a/plinth/modules/firewall/__init__.py
+++ b/plinth/modules/firewall/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure a firewall.
 """
diff --git a/plinth/modules/firewall/components.py b/plinth/modules/firewall/components.py
index 683a48d2b..9d2b5baf5 100644
--- a/plinth/modules/firewall/components.py
+++ b/plinth/modules/firewall/components.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 App component for other apps to use firewall functionality.
 """
diff --git a/plinth/modules/firewall/manifest.py b/plinth/modules/firewall/manifest.py
index 82ef67e41..7a8d88136 100644
--- a/plinth/modules/firewall/manifest.py
+++ b/plinth/modules/firewall/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for firewall.
 """
diff --git a/plinth/modules/firewall/tests/test_components.py b/plinth/modules/firewall/tests/test_components.py
index 1f6118e49..64f26ac56 100644
--- a/plinth/modules/firewall/tests/test_components.py
+++ b/plinth/modules/firewall/tests/test_components.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Tests for firewall app component.
 """
diff --git a/plinth/modules/firewall/urls.py b/plinth/modules/firewall/urls.py
index ba467d9fe..d21372091 100644
--- a/plinth/modules/firewall/urls.py
+++ b/plinth/modules/firewall/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Firewall module
 """
diff --git a/plinth/modules/firewall/views.py b/plinth/modules/firewall/views.py
index e00a35ec2..c517a231a 100644
--- a/plinth/modules/firewall/views.py
+++ b/plinth/modules/firewall/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure a firewall.
 """
diff --git a/plinth/modules/first_boot/__init__.py b/plinth/modules/first_boot/__init__.py
index eaea06270..fc6476b14 100644
--- a/plinth/modules/first_boot/__init__.py
+++ b/plinth/modules/first_boot/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for first boot wizard.
 """
diff --git a/plinth/modules/first_boot/forms.py b/plinth/modules/first_boot/forms.py
index 82a508310..84465d041 100644
--- a/plinth/modules/first_boot/forms.py
+++ b/plinth/modules/first_boot/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django import forms
 from django.utils.translation import ugettext_lazy as _
diff --git a/plinth/modules/first_boot/middleware.py b/plinth/modules/first_boot/middleware.py
index 075285e2c..23c696db2 100644
--- a/plinth/modules/first_boot/middleware.py
+++ b/plinth/modules/first_boot/middleware.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Django middleware to redirect to firstboot wizard if it has not be run
 yet.
diff --git a/plinth/modules/first_boot/templatetags/firstboot_extras.py b/plinth/modules/first_boot/templatetags/firstboot_extras.py
index 0c22c1c31..eedb2d4bd 100644
--- a/plinth/modules/first_boot/templatetags/firstboot_extras.py
+++ b/plinth/modules/first_boot/templatetags/firstboot_extras.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Template tags for first boot module.
 """
diff --git a/plinth/modules/first_boot/urls.py b/plinth/modules/first_boot/urls.py
index a8f7cb53a..88b1a21aa 100644
--- a/plinth/modules/first_boot/urls.py
+++ b/plinth/modules/first_boot/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the First Boot module
 """
diff --git a/plinth/modules/first_boot/views.py b/plinth/modules/first_boot/views.py
index bf52c32d4..57c9238e7 100644
--- a/plinth/modules/first_boot/views.py
+++ b/plinth/modules/first_boot/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django import http
 from django.urls import reverse
diff --git a/plinth/modules/gitweb/__init__.py b/plinth/modules/gitweb/__init__.py
index bedea32d9..484946658 100644
--- a/plinth/modules/gitweb/__init__.py
+++ b/plinth/modules/gitweb/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure Gitweb.
 """
diff --git a/plinth/modules/gitweb/forms.py b/plinth/modules/gitweb/forms.py
index 0722ae1f1..afb6c617b 100644
--- a/plinth/modules/gitweb/forms.py
+++ b/plinth/modules/gitweb/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Django form for configuring Gitweb.
 """
diff --git a/plinth/modules/gitweb/manifest.py b/plinth/modules/gitweb/manifest.py
index c5a1ffc34..c755363d4 100644
--- a/plinth/modules/gitweb/manifest.py
+++ b/plinth/modules/gitweb/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/gitweb/tests/test_actions.py b/plinth/modules/gitweb/tests/test_actions.py
index 254e0c613..0224004e5 100644
--- a/plinth/modules/gitweb/tests/test_actions.py
+++ b/plinth/modules/gitweb/tests/test_actions.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for gitweb module operations.
 """
diff --git a/plinth/modules/gitweb/tests/test_views.py b/plinth/modules/gitweb/tests/test_views.py
index cce64e8b9..7980d8101 100644
--- a/plinth/modules/gitweb/tests/test_views.py
+++ b/plinth/modules/gitweb/tests/test_views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Tests for gitweb views.
 """
diff --git a/plinth/modules/gitweb/urls.py b/plinth/modules/gitweb/urls.py
index 7b1763038..4f2d959af 100644
--- a/plinth/modules/gitweb/urls.py
+++ b/plinth/modules/gitweb/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Gitweb module.
 """
diff --git a/plinth/modules/gitweb/views.py b/plinth/modules/gitweb/views.py
index afbc2f45d..0b549fcf0 100644
--- a/plinth/modules/gitweb/views.py
+++ b/plinth/modules/gitweb/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Django views for Gitweb.
 """
diff --git a/plinth/modules/help/__init__.py b/plinth/modules/help/__init__.py
index 3ccb7acf7..8e7420733 100644
--- a/plinth/modules/help/__init__.py
+++ b/plinth/modules/help/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for help pages.
 """
diff --git a/plinth/modules/help/help.py b/plinth/modules/help/help.py
index 0316dd26c..047ed8a28 100644
--- a/plinth/modules/help/help.py
+++ b/plinth/modules/help/help.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Help app for FreedomBox.
 """
diff --git a/plinth/modules/help/urls.py b/plinth/modules/help/urls.py
index 960b3279d..57d3febcd 100644
--- a/plinth/modules/help/urls.py
+++ b/plinth/modules/help/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Help module
 """
diff --git a/plinth/modules/i2p/__init__.py b/plinth/modules/i2p/__init__.py
index 548807907..edcbbe8af 100644
--- a/plinth/modules/i2p/__init__.py
+++ b/plinth/modules/i2p/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure I2P.
 """
diff --git a/plinth/modules/i2p/helpers.py b/plinth/modules/i2p/helpers.py
index 0e610792a..a6b3570da 100644
--- a/plinth/modules/i2p/helpers.py
+++ b/plinth/modules/i2p/helpers.py
@@ -1,18 +1,4 @@
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Various helpers for the I2P app.
 """
diff --git a/plinth/modules/i2p/manifest.py b/plinth/modules/i2p/manifest.py
index 472b9e016..f9577b323 100644
--- a/plinth/modules/i2p/manifest.py
+++ b/plinth/modules/i2p/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for I2P.
 """
diff --git a/plinth/modules/i2p/resources.py b/plinth/modules/i2p/resources.py
index 2a7c34dbe..2796be978 100644
--- a/plinth/modules/i2p/resources.py
+++ b/plinth/modules/i2p/resources.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Pre-defined list of favorites for I2P and some additional favorites.
 """
diff --git a/plinth/modules/i2p/tests/__init__.py b/plinth/modules/i2p/tests/__init__.py
index 1bf534884..2aec89107 100644
--- a/plinth/modules/i2p/tests/__init__.py
+++ b/plinth/modules/i2p/tests/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Common parts for all I2P tests.
 """
diff --git a/plinth/modules/i2p/tests/test_helpers.py b/plinth/modules/i2p/tests/test_helpers.py
index a641b1a38..848621ed1 100644
--- a/plinth/modules/i2p/tests/test_helpers.py
+++ b/plinth/modules/i2p/tests/test_helpers.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Unit tests for helpers of I2P application.
 """
diff --git a/plinth/modules/i2p/tests/test_router_editor.py b/plinth/modules/i2p/tests/test_router_editor.py
index 9df4ea224..2f9ae883e 100644
--- a/plinth/modules/i2p/tests/test_router_editor.py
+++ b/plinth/modules/i2p/tests/test_router_editor.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test I2P router configuration editing helper.
 """
diff --git a/plinth/modules/i2p/urls.py b/plinth/modules/i2p/urls.py
index 3229d89df..fd3b7167d 100644
--- a/plinth/modules/i2p/urls.py
+++ b/plinth/modules/i2p/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the I2P module.
 """
diff --git a/plinth/modules/i2p/views.py b/plinth/modules/i2p/views.py
index cbdd40925..3672be0d2 100644
--- a/plinth/modules/i2p/views.py
+++ b/plinth/modules/i2p/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for I2P application.
 """
diff --git a/plinth/modules/ikiwiki/__init__.py b/plinth/modules/ikiwiki/__init__.py
index 5a19b2bbe..b2e3c5494 100644
--- a/plinth/modules/ikiwiki/__init__.py
+++ b/plinth/modules/ikiwiki/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure ikiwiki.
 """
diff --git a/plinth/modules/ikiwiki/forms.py b/plinth/modules/ikiwiki/forms.py
index 812b3bee6..a62f4ef7f 100644
--- a/plinth/modules/ikiwiki/forms.py
+++ b/plinth/modules/ikiwiki/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for configuring ikiwiki
 """
diff --git a/plinth/modules/ikiwiki/manifest.py b/plinth/modules/ikiwiki/manifest.py
index 50dc252ea..9af176e50 100644
--- a/plinth/modules/ikiwiki/manifest.py
+++ b/plinth/modules/ikiwiki/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/ikiwiki/urls.py b/plinth/modules/ikiwiki/urls.py
index bb1215f11..95ea75236 100644
--- a/plinth/modules/ikiwiki/urls.py
+++ b/plinth/modules/ikiwiki/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the ikiwiki module
 """
diff --git a/plinth/modules/ikiwiki/views.py b/plinth/modules/ikiwiki/views.py
index e577b8a61..c4e83b322 100644
--- a/plinth/modules/ikiwiki/views.py
+++ b/plinth/modules/ikiwiki/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for configuring ikiwiki.
 """
diff --git a/plinth/modules/infinoted/__init__.py b/plinth/modules/infinoted/__init__.py
index 525134be9..65f6a5d61 100644
--- a/plinth/modules/infinoted/__init__.py
+++ b/plinth/modules/infinoted/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for infinoted.
 """
diff --git a/plinth/modules/infinoted/manifest.py b/plinth/modules/infinoted/manifest.py
index f37687274..38c098148 100644
--- a/plinth/modules/infinoted/manifest.py
+++ b/plinth/modules/infinoted/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/infinoted/urls.py b/plinth/modules/infinoted/urls.py
index 64a6e2188..600387ddf 100644
--- a/plinth/modules/infinoted/urls.py
+++ b/plinth/modules/infinoted/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the infinoted module.
 """
diff --git a/plinth/modules/jsxc/__init__.py b/plinth/modules/jsxc/__init__.py
index 36b5a0a1b..6d0334d47 100644
--- a/plinth/modules/jsxc/__init__.py
+++ b/plinth/modules/jsxc/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure XMPP web client/jsxc.
 """
diff --git a/plinth/modules/jsxc/manifest.py b/plinth/modules/jsxc/manifest.py
index 760f6c1cd..6cd065c29 100644
--- a/plinth/modules/jsxc/manifest.py
+++ b/plinth/modules/jsxc/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.urls import reverse_lazy
 from django.utils.translation import ugettext_lazy as _
diff --git a/plinth/modules/jsxc/urls.py b/plinth/modules/jsxc/urls.py
index c5c9ae9b4..229a9a65f 100644
--- a/plinth/modules/jsxc/urls.py
+++ b/plinth/modules/jsxc/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the JSXC module
 """
diff --git a/plinth/modules/jsxc/views.py b/plinth/modules/jsxc/views.py
index 2cf4624ad..53cab4382 100644
--- a/plinth/modules/jsxc/views.py
+++ b/plinth/modules/jsxc/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for the JSXC module
 """
diff --git a/plinth/modules/letsencrypt/__init__.py b/plinth/modules/letsencrypt/__init__.py
index 9f0180b22..981e42430 100644
--- a/plinth/modules/letsencrypt/__init__.py
+++ b/plinth/modules/letsencrypt/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for using Let's Encrypt.
 """
diff --git a/plinth/modules/letsencrypt/components.py b/plinth/modules/letsencrypt/components.py
index aaa352288..e896bc438 100644
--- a/plinth/modules/letsencrypt/components.py
+++ b/plinth/modules/letsencrypt/components.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 App component for other apps to use handle Let's Encrypt certificates.
 """
diff --git a/plinth/modules/letsencrypt/dbus.py b/plinth/modules/letsencrypt/dbus.py
index e97636b89..3d9625dc9 100644
--- a/plinth/modules/letsencrypt/dbus.py
+++ b/plinth/modules/letsencrypt/dbus.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Expose API over D-Bus to receive renewal notifications.
 """
diff --git a/plinth/modules/letsencrypt/manifest.py b/plinth/modules/letsencrypt/manifest.py
index f1ee6e684..9a340eeec 100644
--- a/plinth/modules/letsencrypt/manifest.py
+++ b/plinth/modules/letsencrypt/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manfiest for letsencrypt.
 """
diff --git a/plinth/modules/letsencrypt/tests/test_components.py b/plinth/modules/letsencrypt/tests/test_components.py
index fc206a8c2..230742aa4 100644
--- a/plinth/modules/letsencrypt/tests/test_components.py
+++ b/plinth/modules/letsencrypt/tests/test_components.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test the Let's Encrypt component for managing certificates.
 """
diff --git a/plinth/modules/letsencrypt/tests/test_domain_name_changes.py b/plinth/modules/letsencrypt/tests/test_domain_name_changes.py
index 9ec0c8fec..ca73deba2 100644
--- a/plinth/modules/letsencrypt/tests/test_domain_name_changes.py
+++ b/plinth/modules/letsencrypt/tests/test_domain_name_changes.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Tests for letsencrypt module.
 """
diff --git a/plinth/modules/letsencrypt/urls.py b/plinth/modules/letsencrypt/urls.py
index ebd9caba4..35293a278 100644
--- a/plinth/modules/letsencrypt/urls.py
+++ b/plinth/modules/letsencrypt/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Let's Encrypt module.
 """
diff --git a/plinth/modules/letsencrypt/views.py b/plinth/modules/letsencrypt/views.py
index 130686915..257dcadc2 100644
--- a/plinth/modules/letsencrypt/views.py
+++ b/plinth/modules/letsencrypt/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for using Let's Encrypt.
 """
diff --git a/plinth/modules/matrixsynapse/__init__.py b/plinth/modules/matrixsynapse/__init__.py
index 72ac05c5e..34a7cf600 100644
--- a/plinth/modules/matrixsynapse/__init__.py
+++ b/plinth/modules/matrixsynapse/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure matrix-synapse server.
 """
diff --git a/plinth/modules/matrixsynapse/forms.py b/plinth/modules/matrixsynapse/forms.py
index 6c180f8f2..8ae05b01d 100644
--- a/plinth/modules/matrixsynapse/forms.py
+++ b/plinth/modules/matrixsynapse/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for the Matrix Synapse module.
 """
diff --git a/plinth/modules/matrixsynapse/manifest.py b/plinth/modules/matrixsynapse/manifest.py
index 1f86c6c74..8a43ad28e 100644
--- a/plinth/modules/matrixsynapse/manifest.py
+++ b/plinth/modules/matrixsynapse/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/matrixsynapse/urls.py b/plinth/modules/matrixsynapse/urls.py
index 788854856..12d55ac22 100644
--- a/plinth/modules/matrixsynapse/urls.py
+++ b/plinth/modules/matrixsynapse/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the matrix-synapse module.
 """
diff --git a/plinth/modules/matrixsynapse/views.py b/plinth/modules/matrixsynapse/views.py
index 0ce480a27..4fab1ebad 100644
--- a/plinth/modules/matrixsynapse/views.py
+++ b/plinth/modules/matrixsynapse/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for the Matrix Synapse module.
 """
diff --git a/plinth/modules/mediawiki/__init__.py b/plinth/modules/mediawiki/__init__.py
index 474b671ef..0c95ad9cf 100644
--- a/plinth/modules/mediawiki/__init__.py
+++ b/plinth/modules/mediawiki/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure MediaWiki.
 """
diff --git a/plinth/modules/mediawiki/forms.py b/plinth/modules/mediawiki/forms.py
index e36794667..c18820e87 100644
--- a/plinth/modules/mediawiki/forms.py
+++ b/plinth/modules/mediawiki/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for configuring MediaWiki.
 """
diff --git a/plinth/modules/mediawiki/manifest.py b/plinth/modules/mediawiki/manifest.py
index b6a58b890..39771604c 100644
--- a/plinth/modules/mediawiki/manifest.py
+++ b/plinth/modules/mediawiki/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/mediawiki/urls.py b/plinth/modules/mediawiki/urls.py
index 64dd1556a..2a3196c62 100644
--- a/plinth/modules/mediawiki/urls.py
+++ b/plinth/modules/mediawiki/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the mediawiki module.
 """
diff --git a/plinth/modules/mediawiki/views.py b/plinth/modules/mediawiki/views.py
index 7f907750e..f45e7b6c8 100644
--- a/plinth/modules/mediawiki/views.py
+++ b/plinth/modules/mediawiki/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for configuring MediaWiki.
 """
diff --git a/plinth/modules/minetest/__init__.py b/plinth/modules/minetest/__init__.py
index c6ebc54d3..4fc1fd5ee 100644
--- a/plinth/modules/minetest/__init__.py
+++ b/plinth/modules/minetest/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for Minetest server.
 """
diff --git a/plinth/modules/minetest/forms.py b/plinth/modules/minetest/forms.py
index 0af0e0f18..62914fbf5 100644
--- a/plinth/modules/minetest/forms.py
+++ b/plinth/modules/minetest/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for minetest module.
 """
diff --git a/plinth/modules/minetest/manifest.py b/plinth/modules/minetest/manifest.py
index a80738a01..d73a1a8b8 100644
--- a/plinth/modules/minetest/manifest.py
+++ b/plinth/modules/minetest/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/minetest/urls.py b/plinth/modules/minetest/urls.py
index 91d2b8f42..41bbf8484 100644
--- a/plinth/modules/minetest/urls.py
+++ b/plinth/modules/minetest/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the minetest module.
 """
diff --git a/plinth/modules/minetest/views.py b/plinth/modules/minetest/views.py
index acfea7d82..81fb616e7 100644
--- a/plinth/modules/minetest/views.py
+++ b/plinth/modules/minetest/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for minetest module.
 """
diff --git a/plinth/modules/minidlna/__init__.py b/plinth/modules/minidlna/__init__.py
index 4e4fa2c54..b74d68f76 100644
--- a/plinth/modules/minidlna/__init__.py
+++ b/plinth/modules/minidlna/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure minidlna.
 """
diff --git a/plinth/modules/minidlna/forms.py b/plinth/modules/minidlna/forms.py
index a272a8264..cbadd8ce5 100644
--- a/plinth/modules/minidlna/forms.py
+++ b/plinth/modules/minidlna/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox configuration form for MiniDLNA server.
 """
diff --git a/plinth/modules/minidlna/manifest.py b/plinth/modules/minidlna/manifest.py
index 24a0643ab..b99644a26 100644
--- a/plinth/modules/minidlna/manifest.py
+++ b/plinth/modules/minidlna/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/minidlna/urls.py b/plinth/modules/minidlna/urls.py
index 6dd7527f2..48c5dc106 100644
--- a/plinth/modules/minidlna/urls.py
+++ b/plinth/modules/minidlna/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the minidlna Server module.
 """
diff --git a/plinth/modules/minidlna/views.py b/plinth/modules/minidlna/views.py
index a8407d3de..17ad35b94 100644
--- a/plinth/modules/minidlna/views.py
+++ b/plinth/modules/minidlna/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for the minidlna module
 """
diff --git a/plinth/modules/mldonkey/__init__.py b/plinth/modules/mldonkey/__init__.py
index e5c903abd..7edd0de5b 100644
--- a/plinth/modules/mldonkey/__init__.py
+++ b/plinth/modules/mldonkey/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for mldonkey.
 """
diff --git a/plinth/modules/mldonkey/manifest.py b/plinth/modules/mldonkey/manifest.py
index 8151336cb..8db4380f2 100644
--- a/plinth/modules/mldonkey/manifest.py
+++ b/plinth/modules/mldonkey/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for mldonkey.
 """
diff --git a/plinth/modules/mldonkey/urls.py b/plinth/modules/mldonkey/urls.py
index 139eb0e11..444827632 100644
--- a/plinth/modules/mldonkey/urls.py
+++ b/plinth/modules/mldonkey/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the mldonkey module.
 """
diff --git a/plinth/modules/monkeysphere/__init__.py b/plinth/modules/monkeysphere/__init__.py
index a27c1e171..05063519b 100644
--- a/plinth/modules/monkeysphere/__init__.py
+++ b/plinth/modules/monkeysphere/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for monkeysphere.
 """
diff --git a/plinth/modules/monkeysphere/manifest.py b/plinth/modules/monkeysphere/manifest.py
index b1fa622bc..3a0ac8aec 100644
--- a/plinth/modules/monkeysphere/manifest.py
+++ b/plinth/modules/monkeysphere/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manfiest for monkeysphere.
 """
diff --git a/plinth/modules/monkeysphere/urls.py b/plinth/modules/monkeysphere/urls.py
index ae8b554f4..badf1b99e 100644
--- a/plinth/modules/monkeysphere/urls.py
+++ b/plinth/modules/monkeysphere/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the monkeysphere module.
 """
diff --git a/plinth/modules/monkeysphere/views.py b/plinth/modules/monkeysphere/views.py
index f4c2247fc..e8eaa53dc 100644
--- a/plinth/modules/monkeysphere/views.py
+++ b/plinth/modules/monkeysphere/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for the monkeysphere module.
 """
diff --git a/plinth/modules/mumble/__init__.py b/plinth/modules/mumble/__init__.py
index ee14b24ac..dc0b3ad32 100644
--- a/plinth/modules/mumble/__init__.py
+++ b/plinth/modules/mumble/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure Mumble server.
 """
diff --git a/plinth/modules/mumble/forms.py b/plinth/modules/mumble/forms.py
index 14f387b89..ea32dc6df 100644
--- a/plinth/modules/mumble/forms.py
+++ b/plinth/modules/mumble/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Mumble server configuration form
 """
diff --git a/plinth/modules/mumble/manifest.py b/plinth/modules/mumble/manifest.py
index 132c1b74f..3c57fb641 100644
--- a/plinth/modules/mumble/manifest.py
+++ b/plinth/modules/mumble/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/mumble/urls.py b/plinth/modules/mumble/urls.py
index 50cbde182..5de76f4ae 100644
--- a/plinth/modules/mumble/urls.py
+++ b/plinth/modules/mumble/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Mumble module
 """
diff --git a/plinth/modules/mumble/views.py b/plinth/modules/mumble/views.py
index 0541f65f0..55bc178f6 100644
--- a/plinth/modules/mumble/views.py
+++ b/plinth/modules/mumble/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 from django.contrib import messages
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/names/__init__.py b/plinth/modules/names/__init__.py
index b5087f333..9f5297cf8 100644
--- a/plinth/modules/names/__init__.py
+++ b/plinth/modules/names/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure name services.
 """
diff --git a/plinth/modules/names/components.py b/plinth/modules/names/components.py
index f8540650d..ce8e48be7 100644
--- a/plinth/modules/names/components.py
+++ b/plinth/modules/names/components.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 App component to introduce a new domain type.
 """
diff --git a/plinth/modules/names/manifest.py b/plinth/modules/names/manifest.py
index 8528437a3..68d0ed7fb 100644
--- a/plinth/modules/names/manifest.py
+++ b/plinth/modules/names/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for names.
 """
diff --git a/plinth/modules/names/tests/test_components.py b/plinth/modules/names/tests/test_components.py
index b36d0884d..073f5c5ac 100644
--- a/plinth/modules/names/tests/test_components.py
+++ b/plinth/modules/names/tests/test_components.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test the App components provides by names app.
 """
diff --git a/plinth/modules/names/tests/test_names.py b/plinth/modules/names/tests/test_names.py
index a2af0887a..4d42ae7d6 100644
--- a/plinth/modules/names/tests/test_names.py
+++ b/plinth/modules/names/tests/test_names.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Tests for names module.
 """
diff --git a/plinth/modules/names/urls.py b/plinth/modules/names/urls.py
index 29e6ba589..713accd75 100644
--- a/plinth/modules/names/urls.py
+++ b/plinth/modules/names/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the name services module
 """
diff --git a/plinth/modules/names/views.py b/plinth/modules/names/views.py
index a3d00e88e..b043b5ca3 100644
--- a/plinth/modules/names/views.py
+++ b/plinth/modules/names/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for name services.
 """
diff --git a/plinth/modules/networks/__init__.py b/plinth/modules/networks/__init__.py
index bc9237c01..4ef678993 100644
--- a/plinth/modules/networks/__init__.py
+++ b/plinth/modules/networks/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to interface with network-manager.
 """
diff --git a/plinth/modules/networks/forms.py b/plinth/modules/networks/forms.py
index 0b0a43aae..6c355046e 100644
--- a/plinth/modules/networks/forms.py
+++ b/plinth/modules/networks/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django import forms
 from django.core import validators
diff --git a/plinth/modules/networks/networks.py b/plinth/modules/networks/networks.py
index 29ca23b79..685829ebb 100644
--- a/plinth/modules/networks/networks.py
+++ b/plinth/modules/networks/networks.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import logging
 
diff --git a/plinth/modules/networks/urls.py b/plinth/modules/networks/urls.py
index 6c528b349..4953a5e3c 100644
--- a/plinth/modules/networks/urls.py
+++ b/plinth/modules/networks/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Network module
 """
diff --git a/plinth/modules/openvpn/__init__.py b/plinth/modules/openvpn/__init__.py
index 04da07f33..bfc7964cc 100644
--- a/plinth/modules/openvpn/__init__.py
+++ b/plinth/modules/openvpn/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure OpenVPN server.
 """
diff --git a/plinth/modules/openvpn/forms.py b/plinth/modules/openvpn/forms.py
index e1da3cdf1..31ec5c3f5 100644
--- a/plinth/modules/openvpn/forms.py
+++ b/plinth/modules/openvpn/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for configuring OpenVPN.
 """
diff --git a/plinth/modules/openvpn/manifest.py b/plinth/modules/openvpn/manifest.py
index 649e7f22c..ffd3c17c4 100644
--- a/plinth/modules/openvpn/manifest.py
+++ b/plinth/modules/openvpn/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for OpenVPN.
 """
diff --git a/plinth/modules/openvpn/urls.py b/plinth/modules/openvpn/urls.py
index af647bebe..793915bf5 100644
--- a/plinth/modules/openvpn/urls.py
+++ b/plinth/modules/openvpn/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the OpenVPN module.
 """
diff --git a/plinth/modules/openvpn/views.py b/plinth/modules/openvpn/views.py
index 3d578c856..66283e9b0 100644
--- a/plinth/modules/openvpn/views.py
+++ b/plinth/modules/openvpn/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for configuring OpenVPN server.
 """
diff --git a/plinth/modules/pagekite/__init__.py b/plinth/modules/pagekite/__init__.py
index 114b35818..125543d65 100644
--- a/plinth/modules/pagekite/__init__.py
+++ b/plinth/modules/pagekite/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure PageKite.
 """
diff --git a/plinth/modules/pagekite/forms.py b/plinth/modules/pagekite/forms.py
index 1e7425cb4..aeba83ff9 100644
--- a/plinth/modules/pagekite/forms.py
+++ b/plinth/modules/pagekite/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import copy
 import json
diff --git a/plinth/modules/pagekite/manifest.py b/plinth/modules/pagekite/manifest.py
index 19d4ba694..bd6e2a206 100644
--- a/plinth/modules/pagekite/manifest.py
+++ b/plinth/modules/pagekite/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for pagekite.
 """
diff --git a/plinth/modules/pagekite/templatetags/pagekite_extras.py b/plinth/modules/pagekite/templatetags/pagekite_extras.py
index bc30931ad..a76f47469 100644
--- a/plinth/modules/pagekite/templatetags/pagekite_extras.py
+++ b/plinth/modules/pagekite/templatetags/pagekite_extras.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django import template
 from plinth.modules.pagekite import utils
diff --git a/plinth/modules/pagekite/tests/test_pagekite.py b/plinth/modules/pagekite/tests/test_pagekite.py
index 11a905dfc..536df3673 100644
--- a/plinth/modules/pagekite/tests/test_pagekite.py
+++ b/plinth/modules/pagekite/tests/test_pagekite.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test modules for Pagekite functions.
 """
diff --git a/plinth/modules/pagekite/urls.py b/plinth/modules/pagekite/urls.py
index 8eb83486d..c1c132196 100644
--- a/plinth/modules/pagekite/urls.py
+++ b/plinth/modules/pagekite/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the PageKite module
 """
diff --git a/plinth/modules/pagekite/utils.py b/plinth/modules/pagekite/utils.py
index 8ea3ac884..1a7bc77a8 100644
--- a/plinth/modules/pagekite/utils.py
+++ b/plinth/modules/pagekite/utils.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import json
 import logging
diff --git a/plinth/modules/pagekite/views.py b/plinth/modules/pagekite/views.py
index b0d1ba723..6fe7e8a51 100644
--- a/plinth/modules/pagekite/views.py
+++ b/plinth/modules/pagekite/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.http import HttpResponseRedirect
 from django.urls import reverse, reverse_lazy
diff --git a/plinth/modules/power/__init__.py b/plinth/modules/power/__init__.py
index e85315386..ba2e4052e 100644
--- a/plinth/modules/power/__init__.py
+++ b/plinth/modules/power/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for power controls.
 """
diff --git a/plinth/modules/power/manifest.py b/plinth/modules/power/manifest.py
index 06b09a99d..61ad25ded 100644
--- a/plinth/modules/power/manifest.py
+++ b/plinth/modules/power/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for power.
 """
diff --git a/plinth/modules/power/urls.py b/plinth/modules/power/urls.py
index 3292c8104..772df67ad 100644
--- a/plinth/modules/power/urls.py
+++ b/plinth/modules/power/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the power module.
 """
diff --git a/plinth/modules/power/views.py b/plinth/modules/power/views.py
index 62de95604..54f6eaaca 100644
--- a/plinth/modules/power/views.py
+++ b/plinth/modules/power/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for power module.
 """
diff --git a/plinth/modules/privoxy/__init__.py b/plinth/modules/privoxy/__init__.py
index 1ffb16a70..7033f7dc9 100644
--- a/plinth/modules/privoxy/__init__.py
+++ b/plinth/modules/privoxy/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure Privoxy.
 """
diff --git a/plinth/modules/privoxy/manifest.py b/plinth/modules/privoxy/manifest.py
index 77d523793..336b83e47 100644
--- a/plinth/modules/privoxy/manifest.py
+++ b/plinth/modules/privoxy/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for privoxy.
 """
diff --git a/plinth/modules/privoxy/urls.py b/plinth/modules/privoxy/urls.py
index 6887b281e..f540f20b0 100644
--- a/plinth/modules/privoxy/urls.py
+++ b/plinth/modules/privoxy/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Privoxy module.
 """
diff --git a/plinth/modules/quassel/__init__.py b/plinth/modules/quassel/__init__.py
index 26e5b003d..319e81cb7 100644
--- a/plinth/modules/quassel/__init__.py
+++ b/plinth/modules/quassel/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for Quassel.
 """
diff --git a/plinth/modules/quassel/forms.py b/plinth/modules/quassel/forms.py
index 5455b7fc1..723f7338e 100644
--- a/plinth/modules/quassel/forms.py
+++ b/plinth/modules/quassel/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for Quassel app.
 """
diff --git a/plinth/modules/quassel/manifest.py b/plinth/modules/quassel/manifest.py
index a97f2f0a0..fb252e747 100644
--- a/plinth/modules/quassel/manifest.py
+++ b/plinth/modules/quassel/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/quassel/urls.py b/plinth/modules/quassel/urls.py
index fb64091d5..b3536433d 100644
--- a/plinth/modules/quassel/urls.py
+++ b/plinth/modules/quassel/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the quassel module.
 """
diff --git a/plinth/modules/quassel/views.py b/plinth/modules/quassel/views.py
index f5f294bce..bf7337f03 100644
--- a/plinth/modules/quassel/views.py
+++ b/plinth/modules/quassel/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from plinth.modules import quassel
 from plinth.views import AppView
diff --git a/plinth/modules/radicale/__init__.py b/plinth/modules/radicale/__init__.py
index d94b65c47..8c3e26ba6 100644
--- a/plinth/modules/radicale/__init__.py
+++ b/plinth/modules/radicale/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for radicale.
 """
diff --git a/plinth/modules/radicale/forms.py b/plinth/modules/radicale/forms.py
index 029fc6663..160c09375 100644
--- a/plinth/modules/radicale/forms.py
+++ b/plinth/modules/radicale/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for radicale module.
 """
diff --git a/plinth/modules/radicale/manifest.py b/plinth/modules/radicale/manifest.py
index 7eafdc54c..965b491fd 100644
--- a/plinth/modules/radicale/manifest.py
+++ b/plinth/modules/radicale/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/radicale/urls.py b/plinth/modules/radicale/urls.py
index 0601736fc..397c5d63f 100644
--- a/plinth/modules/radicale/urls.py
+++ b/plinth/modules/radicale/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the radicale module.
 """
diff --git a/plinth/modules/radicale/views.py b/plinth/modules/radicale/views.py
index 0b3880025..18733ccd0 100644
--- a/plinth/modules/radicale/views.py
+++ b/plinth/modules/radicale/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for radicale module.
 """
diff --git a/plinth/modules/roundcube/__init__.py b/plinth/modules/roundcube/__init__.py
index 4c4349296..7acab823e 100644
--- a/plinth/modules/roundcube/__init__.py
+++ b/plinth/modules/roundcube/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure Roundcube.
 """
diff --git a/plinth/modules/roundcube/manifest.py b/plinth/modules/roundcube/manifest.py
index d518856d8..e71c0eae6 100644
--- a/plinth/modules/roundcube/manifest.py
+++ b/plinth/modules/roundcube/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/roundcube/urls.py b/plinth/modules/roundcube/urls.py
index ac3a33343..87593c338 100644
--- a/plinth/modules/roundcube/urls.py
+++ b/plinth/modules/roundcube/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Roundcube module.
 """
diff --git a/plinth/modules/samba/__init__.py b/plinth/modules/samba/__init__.py
index 49f2d9ffe..11c8d5a1e 100644
--- a/plinth/modules/samba/__init__.py
+++ b/plinth/modules/samba/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure samba.
 """
diff --git a/plinth/modules/samba/manifest.py b/plinth/modules/samba/manifest.py
index cc17a9605..685be3df3 100644
--- a/plinth/modules/samba/manifest.py
+++ b/plinth/modules/samba/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for Samba.
 """
diff --git a/plinth/modules/samba/tests/test_views.py b/plinth/modules/samba/tests/test_views.py
index 54316d6c9..6a181ded7 100644
--- a/plinth/modules/samba/tests/test_views.py
+++ b/plinth/modules/samba/tests/test_views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Tests for samba views.
 """
diff --git a/plinth/modules/samba/urls.py b/plinth/modules/samba/urls.py
index 8df63f5a4..7df7a7630 100644
--- a/plinth/modules/samba/urls.py
+++ b/plinth/modules/samba/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the samba module.
 """
diff --git a/plinth/modules/samba/views.py b/plinth/modules/samba/views.py
index a51fbc72e..942770364 100644
--- a/plinth/modules/samba/views.py
+++ b/plinth/modules/samba/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for samba module.
 """
diff --git a/plinth/modules/searx/__init__.py b/plinth/modules/searx/__init__.py
index 0a4cde1b9..f705b5c8f 100644
--- a/plinth/modules/searx/__init__.py
+++ b/plinth/modules/searx/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure Searx.
 """
diff --git a/plinth/modules/searx/forms.py b/plinth/modules/searx/forms.py
index 60821f3b3..e71784e0f 100644
--- a/plinth/modules/searx/forms.py
+++ b/plinth/modules/searx/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Django form for configuring Searx.
 """
diff --git a/plinth/modules/searx/manifest.py b/plinth/modules/searx/manifest.py
index 1fb96f62e..2a741634e 100644
--- a/plinth/modules/searx/manifest.py
+++ b/plinth/modules/searx/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/searx/urls.py b/plinth/modules/searx/urls.py
index c837e8142..afc4c8701 100644
--- a/plinth/modules/searx/urls.py
+++ b/plinth/modules/searx/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Searx module.
 """
diff --git a/plinth/modules/searx/views.py b/plinth/modules/searx/views.py
index 16f3ed96e..193a83750 100644
--- a/plinth/modules/searx/views.py
+++ b/plinth/modules/searx/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Django views for Searx.
 """
diff --git a/plinth/modules/security/__init__.py b/plinth/modules/security/__init__.py
index b17df5082..1e5446f08 100644
--- a/plinth/modules/security/__init__.py
+++ b/plinth/modules/security/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for security configuration.
 """
diff --git a/plinth/modules/security/forms.py b/plinth/modules/security/forms.py
index b87172c80..a7e91c38d 100644
--- a/plinth/modules/security/forms.py
+++ b/plinth/modules/security/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for security module
 """
diff --git a/plinth/modules/security/manifest.py b/plinth/modules/security/manifest.py
index 396019472..c4747d162 100644
--- a/plinth/modules/security/manifest.py
+++ b/plinth/modules/security/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for security.
 """
diff --git a/plinth/modules/security/urls.py b/plinth/modules/security/urls.py
index 5dc728693..dea22a8a6 100644
--- a/plinth/modules/security/urls.py
+++ b/plinth/modules/security/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the security module
 """
diff --git a/plinth/modules/security/views.py b/plinth/modules/security/views.py
index 02577e1f4..d6ed5cd51 100644
--- a/plinth/modules/security/views.py
+++ b/plinth/modules/security/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for security module
 """
diff --git a/plinth/modules/shaarli/__init__.py b/plinth/modules/shaarli/__init__.py
index 75fdae980..f7d1ecfdb 100644
--- a/plinth/modules/shaarli/__init__.py
+++ b/plinth/modules/shaarli/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure Shaarli.
 """
diff --git a/plinth/modules/shaarli/manifest.py b/plinth/modules/shaarli/manifest.py
index 3426ff926..d4258df40 100644
--- a/plinth/modules/shaarli/manifest.py
+++ b/plinth/modules/shaarli/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/shaarli/urls.py b/plinth/modules/shaarli/urls.py
index 8b7971563..9322231f3 100644
--- a/plinth/modules/shaarli/urls.py
+++ b/plinth/modules/shaarli/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Shaarli module.
 """
diff --git a/plinth/modules/shadowsocks/__init__.py b/plinth/modules/shadowsocks/__init__.py
index ed59929c4..531394475 100644
--- a/plinth/modules/shadowsocks/__init__.py
+++ b/plinth/modules/shadowsocks/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure Shadowsocks.
 """
diff --git a/plinth/modules/shadowsocks/forms.py b/plinth/modules/shadowsocks/forms.py
index 6f143a328..7726f99e6 100644
--- a/plinth/modules/shadowsocks/forms.py
+++ b/plinth/modules/shadowsocks/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for configuring Shadowsocks.
 """
diff --git a/plinth/modules/shadowsocks/manifest.py b/plinth/modules/shadowsocks/manifest.py
index c985e3c8d..78a3455c6 100644
--- a/plinth/modules/shadowsocks/manifest.py
+++ b/plinth/modules/shadowsocks/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for shadowsocks.
 """
diff --git a/plinth/modules/shadowsocks/urls.py b/plinth/modules/shadowsocks/urls.py
index 7551edad2..a05a303d9 100644
--- a/plinth/modules/shadowsocks/urls.py
+++ b/plinth/modules/shadowsocks/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Shadowsocks module.
 """
diff --git a/plinth/modules/shadowsocks/views.py b/plinth/modules/shadowsocks/views.py
index 2d095e3ab..254e6e2c5 100644
--- a/plinth/modules/shadowsocks/views.py
+++ b/plinth/modules/shadowsocks/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for configuring Shadowsocks.
 """
diff --git a/plinth/modules/sharing/__init__.py b/plinth/modules/sharing/__init__.py
index 14f539e7a..da9c86793 100644
--- a/plinth/modules/sharing/__init__.py
+++ b/plinth/modules/sharing/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure sharing.
 """
diff --git a/plinth/modules/sharing/forms.py b/plinth/modules/sharing/forms.py
index a93de4d09..fc74fa2b9 100644
--- a/plinth/modules/sharing/forms.py
+++ b/plinth/modules/sharing/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Django forms for sharing app.
 """
diff --git a/plinth/modules/sharing/manifest.py b/plinth/modules/sharing/manifest.py
index 47bdbf8c6..0dedccb20 100644
--- a/plinth/modules/sharing/manifest.py
+++ b/plinth/modules/sharing/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for sharing.
 """
diff --git a/plinth/modules/sharing/urls.py b/plinth/modules/sharing/urls.py
index 853f56490..54feb8248 100644
--- a/plinth/modules/sharing/urls.py
+++ b/plinth/modules/sharing/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the sharing app.
 """
diff --git a/plinth/modules/sharing/views.py b/plinth/modules/sharing/views.py
index 94cd7c0cb..074e4012a 100644
--- a/plinth/modules/sharing/views.py
+++ b/plinth/modules/sharing/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for the sharing app.
 """
diff --git a/plinth/modules/snapshot/__init__.py b/plinth/modules/snapshot/__init__.py
index 7d1d00e16..3d79c44e9 100644
--- a/plinth/modules/snapshot/__init__.py
+++ b/plinth/modules/snapshot/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to manage filesystem snapshots.
 """
diff --git a/plinth/modules/snapshot/forms.py b/plinth/modules/snapshot/forms.py
index ae92c6806..3404b86e0 100644
--- a/plinth/modules/snapshot/forms.py
+++ b/plinth/modules/snapshot/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for snapshot module.
 """
diff --git a/plinth/modules/snapshot/manifest.py b/plinth/modules/snapshot/manifest.py
index 04bef7e0c..fca79a2be 100644
--- a/plinth/modules/snapshot/manifest.py
+++ b/plinth/modules/snapshot/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for snapshot.
 """
diff --git a/plinth/modules/snapshot/urls.py b/plinth/modules/snapshot/urls.py
index 284146d9c..e1f4973ec 100644
--- a/plinth/modules/snapshot/urls.py
+++ b/plinth/modules/snapshot/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the snapshot module.
 """
diff --git a/plinth/modules/snapshot/views.py b/plinth/modules/snapshot/views.py
index f314eedc8..53e130d91 100644
--- a/plinth/modules/snapshot/views.py
+++ b/plinth/modules/snapshot/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for snapshot module.
 """
diff --git a/plinth/modules/ssh/__init__.py b/plinth/modules/ssh/__init__.py
index d8e88ec5f..a100059bf 100644
--- a/plinth/modules/ssh/__init__.py
+++ b/plinth/modules/ssh/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for OpenSSH server.
 """
diff --git a/plinth/modules/ssh/forms.py b/plinth/modules/ssh/forms.py
index 439e55890..0e42d4491 100644
--- a/plinth/modules/ssh/forms.py
+++ b/plinth/modules/ssh/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox configuration form for OpenSSH server.
 """
diff --git a/plinth/modules/ssh/manifest.py b/plinth/modules/ssh/manifest.py
index 0f3cd172e..6abceee4d 100644
--- a/plinth/modules/ssh/manifest.py
+++ b/plinth/modules/ssh/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for ssh.
 """
diff --git a/plinth/modules/ssh/urls.py b/plinth/modules/ssh/urls.py
index 66d4701c9..91c0df7c3 100644
--- a/plinth/modules/ssh/urls.py
+++ b/plinth/modules/ssh/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Secure Shell Server module.
 """
diff --git a/plinth/modules/ssh/views.py b/plinth/modules/ssh/views.py
index 5dd7162ea..630eae126 100644
--- a/plinth/modules/ssh/views.py
+++ b/plinth/modules/ssh/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for the SSH module
 """
diff --git a/plinth/modules/sso/__init__.py b/plinth/modules/sso/__init__.py
index 67609fd1d..2a6912adf 100644
--- a/plinth/modules/sso/__init__.py
+++ b/plinth/modules/sso/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure Single Sign On services.
 """
diff --git a/plinth/modules/sso/forms.py b/plinth/modules/sso/forms.py
index e490bfbd1..1de76a7b4 100644
--- a/plinth/modules/sso/forms.py
+++ b/plinth/modules/sso/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for the Single Sign On app of FreedomBox.
 """
diff --git a/plinth/modules/sso/urls.py b/plinth/modules/sso/urls.py
index 5bad3db8e..1cec8a3af 100644
--- a/plinth/modules/sso/urls.py
+++ b/plinth/modules/sso/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Single Sign On module.
 """
diff --git a/plinth/modules/sso/views.py b/plinth/modules/sso/views.py
index a02564b55..a9033c6a0 100644
--- a/plinth/modules/sso/views.py
+++ b/plinth/modules/sso/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for the Single Sign On app of FreedomBox.
 """
diff --git a/plinth/modules/storage/__init__.py b/plinth/modules/storage/__init__.py
index e0e725725..a5e759107 100644
--- a/plinth/modules/storage/__init__.py
+++ b/plinth/modules/storage/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to manage storage.
 """
diff --git a/plinth/modules/storage/forms.py b/plinth/modules/storage/forms.py
index 87dd85d1c..89501529f 100644
--- a/plinth/modules/storage/forms.py
+++ b/plinth/modules/storage/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for directory selection.
 """
diff --git a/plinth/modules/storage/manifest.py b/plinth/modules/storage/manifest.py
index 22d40ae39..e2909a820 100644
--- a/plinth/modules/storage/manifest.py
+++ b/plinth/modules/storage/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for storage.
 """
diff --git a/plinth/modules/storage/tests/test_storage.py b/plinth/modules/storage/tests/test_storage.py
index 9e4a99974..60c01192f 100644
--- a/plinth/modules/storage/tests/test_storage.py
+++ b/plinth/modules/storage/tests/test_storage.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for storage module operations.
 """
diff --git a/plinth/modules/storage/urls.py b/plinth/modules/storage/urls.py
index 493d6e894..8cc25e8f5 100644
--- a/plinth/modules/storage/urls.py
+++ b/plinth/modules/storage/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the disks module.
 """
diff --git a/plinth/modules/storage/views.py b/plinth/modules/storage/views.py
index dd2b672b8..0296a37a2 100644
--- a/plinth/modules/storage/views.py
+++ b/plinth/modules/storage/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for storage module.
 """
diff --git a/plinth/modules/syncthing/__init__.py b/plinth/modules/syncthing/__init__.py
index bfb06ccb2..ac43cc1a1 100644
--- a/plinth/modules/syncthing/__init__.py
+++ b/plinth/modules/syncthing/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure Syncthing.
 """
diff --git a/plinth/modules/syncthing/manifest.py b/plinth/modules/syncthing/manifest.py
index 2784ee68e..ac0efd4e6 100644
--- a/plinth/modules/syncthing/manifest.py
+++ b/plinth/modules/syncthing/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/syncthing/urls.py b/plinth/modules/syncthing/urls.py
index a33b06805..bf4d738bf 100644
--- a/plinth/modules/syncthing/urls.py
+++ b/plinth/modules/syncthing/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Syncthing module.
 """
diff --git a/plinth/modules/tahoe/__init__.py b/plinth/modules/tahoe/__init__.py
index f0a355c12..2c5fedcab 100644
--- a/plinth/modules/tahoe/__init__.py
+++ b/plinth/modules/tahoe/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure Tahoe-LAFS.
 """
diff --git a/plinth/modules/tahoe/errors.py b/plinth/modules/tahoe/errors.py
index 9fff21e6a..e767d9221 100644
--- a/plinth/modules/tahoe/errors.py
+++ b/plinth/modules/tahoe/errors.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Errors for Tahoe-LAFS module
 """
diff --git a/plinth/modules/tahoe/manifest.py b/plinth/modules/tahoe/manifest.py
index d5129735f..e83d5d996 100644
--- a/plinth/modules/tahoe/manifest.py
+++ b/plinth/modules/tahoe/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manfiest for tahoe-lafs.
 """
diff --git a/plinth/modules/tahoe/urls.py b/plinth/modules/tahoe/urls.py
index 784068e27..da803ac8f 100644
--- a/plinth/modules/tahoe/urls.py
+++ b/plinth/modules/tahoe/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Tahoe-LAFS module.
 """
diff --git a/plinth/modules/tahoe/views.py b/plinth/modules/tahoe/views.py
index 072024f81..4ddec91eb 100644
--- a/plinth/modules/tahoe/views.py
+++ b/plinth/modules/tahoe/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for the Tahoe-LAFS module
 """
diff --git a/plinth/modules/tor/__init__.py b/plinth/modules/tor/__init__.py
index 27dab4b8f..72d03e591 100644
--- a/plinth/modules/tor/__init__.py
+++ b/plinth/modules/tor/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure Tor.
 """
diff --git a/plinth/modules/tor/forms.py b/plinth/modules/tor/forms.py
index 00dab52c9..bee709cda 100644
--- a/plinth/modules/tor/forms.py
+++ b/plinth/modules/tor/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for configuring Tor.
 """
diff --git a/plinth/modules/tor/manifest.py b/plinth/modules/tor/manifest.py
index 6dbf5b181..801217f3b 100644
--- a/plinth/modules/tor/manifest.py
+++ b/plinth/modules/tor/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/tor/tests/test_tor.py b/plinth/modules/tor/tests/test_tor.py
index 50eba1839..7efff89a8 100644
--- a/plinth/modules/tor/tests/test_tor.py
+++ b/plinth/modules/tor/tests/test_tor.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Tests for Tor module.
 """
diff --git a/plinth/modules/tor/urls.py b/plinth/modules/tor/urls.py
index 28ce8bed9..0879755f5 100644
--- a/plinth/modules/tor/urls.py
+++ b/plinth/modules/tor/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Tor module.
 """
diff --git a/plinth/modules/tor/utils.py b/plinth/modules/tor/utils.py
index 0c721214b..27387a058 100644
--- a/plinth/modules/tor/utils.py
+++ b/plinth/modules/tor/utils.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Tor utility functions
 """
diff --git a/plinth/modules/tor/views.py b/plinth/modules/tor/views.py
index c12e32038..daa885280 100644
--- a/plinth/modules/tor/views.py
+++ b/plinth/modules/tor/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for configuring Tor.
 """
diff --git a/plinth/modules/transmission/__init__.py b/plinth/modules/transmission/__init__.py
index 080e45c1a..eac87db5f 100644
--- a/plinth/modules/transmission/__init__.py
+++ b/plinth/modules/transmission/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure Transmission server.
 """
diff --git a/plinth/modules/transmission/forms.py b/plinth/modules/transmission/forms.py
index a55877ea9..9eb059eeb 100644
--- a/plinth/modules/transmission/forms.py
+++ b/plinth/modules/transmission/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for configuring Transmission.
 """
diff --git a/plinth/modules/transmission/manifest.py b/plinth/modules/transmission/manifest.py
index d6ad33246..f858b29d9 100644
--- a/plinth/modules/transmission/manifest.py
+++ b/plinth/modules/transmission/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/transmission/urls.py b/plinth/modules/transmission/urls.py
index 94d4d38ad..31784e40e 100644
--- a/plinth/modules/transmission/urls.py
+++ b/plinth/modules/transmission/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Transmission module.
 """
diff --git a/plinth/modules/transmission/views.py b/plinth/modules/transmission/views.py
index c1a5aab43..b0a0bde59 100644
--- a/plinth/modules/transmission/views.py
+++ b/plinth/modules/transmission/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for configuring Transmission Server.
 """
diff --git a/plinth/modules/ttrss/__init__.py b/plinth/modules/ttrss/__init__.py
index 8c695803f..1fdc95917 100644
--- a/plinth/modules/ttrss/__init__.py
+++ b/plinth/modules/ttrss/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to configure Tiny Tiny RSS.
 """
diff --git a/plinth/modules/ttrss/manifest.py b/plinth/modules/ttrss/manifest.py
index b12c609c9..1d9b7bb14 100644
--- a/plinth/modules/ttrss/manifest.py
+++ b/plinth/modules/ttrss/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 from django.utils.translation import ugettext_lazy as _
 
diff --git a/plinth/modules/ttrss/urls.py b/plinth/modules/ttrss/urls.py
index b9e44659b..00336ffc6 100644
--- a/plinth/modules/ttrss/urls.py
+++ b/plinth/modules/ttrss/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Tiny Tiny RSS module.
 """
diff --git a/plinth/modules/upgrades/__init__.py b/plinth/modules/upgrades/__init__.py
index 01ed0fa6f..4293ea0b7 100644
--- a/plinth/modules/upgrades/__init__.py
+++ b/plinth/modules/upgrades/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for upgrades.
 """
diff --git a/plinth/modules/upgrades/forms.py b/plinth/modules/upgrades/forms.py
index 4576d357b..26a5e0db3 100644
--- a/plinth/modules/upgrades/forms.py
+++ b/plinth/modules/upgrades/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for configuring unattended-upgrades.
 """
diff --git a/plinth/modules/upgrades/manifest.py b/plinth/modules/upgrades/manifest.py
index c1d95923c..b6efa1644 100644
--- a/plinth/modules/upgrades/manifest.py
+++ b/plinth/modules/upgrades/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for upgrades.
 """
diff --git a/plinth/modules/upgrades/urls.py b/plinth/modules/upgrades/urls.py
index 685a22295..e9c2b260e 100644
--- a/plinth/modules/upgrades/urls.py
+++ b/plinth/modules/upgrades/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the upgrades module
 """
diff --git a/plinth/modules/upgrades/views.py b/plinth/modules/upgrades/views.py
index bfd4a6f06..c269cdc9c 100644
--- a/plinth/modules/upgrades/views.py
+++ b/plinth/modules/upgrades/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for upgrades.
 """
diff --git a/plinth/modules/users/__init__.py b/plinth/modules/users/__init__.py
index 60535823b..e8d3e8e99 100644
--- a/plinth/modules/users/__init__.py
+++ b/plinth/modules/users/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app to manage users.
 """
diff --git a/plinth/modules/users/forms.py b/plinth/modules/users/forms.py
index 146515365..96ef0e4f0 100644
--- a/plinth/modules/users/forms.py
+++ b/plinth/modules/users/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import pwd
 import re
diff --git a/plinth/modules/users/tests/test_actions.py b/plinth/modules/users/tests/test_actions.py
index 3d2a086c5..6a1d54645 100644
--- a/plinth/modules/users/tests/test_actions.py
+++ b/plinth/modules/users/tests/test_actions.py
@@ -1,20 +1,5 @@
 #!/usr/bin/python3
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module to exercise user actions.
 
diff --git a/plinth/modules/users/tests/test_group.py b/plinth/modules/users/tests/test_group.py
index 8b9c12b61..4d6cf141a 100644
--- a/plinth/modules/users/tests/test_group.py
+++ b/plinth/modules/users/tests/test_group.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module to exercise group registration.
 
diff --git a/plinth/modules/users/tests/test_views.py b/plinth/modules/users/tests/test_views.py
index 3db01613e..b0e0401b2 100644
--- a/plinth/modules/users/tests/test_views.py
+++ b/plinth/modules/users/tests/test_views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Tests for users views.
 """
diff --git a/plinth/modules/users/urls.py b/plinth/modules/users/urls.py
index 9890a3b29..935a2fc2e 100644
--- a/plinth/modules/users/urls.py
+++ b/plinth/modules/users/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the Users module
 """
diff --git a/plinth/modules/users/views.py b/plinth/modules/users/views.py
index 0b13e3a26..9f07acdd8 100644
--- a/plinth/modules/users/views.py
+++ b/plinth/modules/users/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import django.views.generic
 from django.contrib import messages
diff --git a/plinth/modules/wireguard/__init__.py b/plinth/modules/wireguard/__init__.py
index 3d9d97ae8..5a0afa023 100644
--- a/plinth/modules/wireguard/__init__.py
+++ b/plinth/modules/wireguard/__init__.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox app for wireguard.
 """
diff --git a/plinth/modules/wireguard/forms.py b/plinth/modules/wireguard/forms.py
index f7bfd7d8c..2c9079e49 100644
--- a/plinth/modules/wireguard/forms.py
+++ b/plinth/modules/wireguard/forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Forms for wireguard module.
 """
diff --git a/plinth/modules/wireguard/manifest.py b/plinth/modules/wireguard/manifest.py
index 2322d3895..f2b21dc38 100644
--- a/plinth/modules/wireguard/manifest.py
+++ b/plinth/modules/wireguard/manifest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Application manifest for WireGuard.
 """
diff --git a/plinth/modules/wireguard/tests/test_forms.py b/plinth/modules/wireguard/tests/test_forms.py
index acf3b0ca9..3e4c33d9b 100644
--- a/plinth/modules/wireguard/tests/test_forms.py
+++ b/plinth/modules/wireguard/tests/test_forms.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Tests for wireguard module forms.
 """
diff --git a/plinth/modules/wireguard/urls.py b/plinth/modules/wireguard/urls.py
index 899b32aae..8c3734e3f 100644
--- a/plinth/modules/wireguard/urls.py
+++ b/plinth/modules/wireguard/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 URLs for the wireguard module.
 """
diff --git a/plinth/modules/wireguard/utils.py b/plinth/modules/wireguard/utils.py
index 44a3e6a36..e76689d19 100644
--- a/plinth/modules/wireguard/utils.py
+++ b/plinth/modules/wireguard/utils.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Utilities for managing WireGuard.
 """
diff --git a/plinth/modules/wireguard/views.py b/plinth/modules/wireguard/views.py
index 84dcd89a6..0c9d0c261 100644
--- a/plinth/modules/wireguard/views.py
+++ b/plinth/modules/wireguard/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Views for WireGuard application.
 """
diff --git a/plinth/network.py b/plinth/network.py
index 7d3add55c..7e8600408 100644
--- a/plinth/network.py
+++ b/plinth/network.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Helper functions for working with network manager.
 """
diff --git a/plinth/notification.py b/plinth/notification.py
index c6084b5b3..525cf0e4a 100644
--- a/plinth/notification.py
+++ b/plinth/notification.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Module to provide API for showing notifications.
 """
diff --git a/plinth/package.py b/plinth/package.py
index d2dd81d62..fdcaa59b7 100644
--- a/plinth/package.py
+++ b/plinth/package.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Framework for installing and updating distribution packages
 """
diff --git a/plinth/setup.py b/plinth/setup.py
index 42b27636d..349fc3bb4 100644
--- a/plinth/setup.py
+++ b/plinth/setup.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Utilities for performing application setup operations.
 """
diff --git a/plinth/signals.py b/plinth/signals.py
index 5bf373254..342645544 100644
--- a/plinth/signals.py
+++ b/plinth/signals.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Django signals emitted within FreedomBox.
 """
diff --git a/plinth/templatetags/plinth_extras.py b/plinth/templatetags/plinth_extras.py
index 1ac05b0e0..7f04f5b30 100644
--- a/plinth/templatetags/plinth_extras.py
+++ b/plinth/templatetags/plinth_extras.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 
 import os
 from urllib.parse import urlparse
diff --git a/plinth/tests/config.py b/plinth/tests/config.py
index e586aa2ae..22700aebb 100644
--- a/plinth/tests/config.py
+++ b/plinth/tests/config.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Configuration for running tests.
 
diff --git a/plinth/tests/conftest.py b/plinth/tests/conftest.py
index 1542dc7c2..122dc1c11 100644
--- a/plinth/tests/conftest.py
+++ b/plinth/tests/conftest.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 pytest configuration for all tests in the plinth/tests/ directory.
 """
diff --git a/plinth/tests/data/django_test_settings.py b/plinth/tests/data/django_test_settings.py
index 1d1ed16b0..1d31afca4 100644
--- a/plinth/tests/data/django_test_settings.py
+++ b/plinth/tests/data/django_test_settings.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Django settings for test modules.
 """
diff --git a/plinth/tests/data/urls.py b/plinth/tests/data/urls.py
index ba364b75b..6a0c7c07c 100644
--- a/plinth/tests/data/urls.py
+++ b/plinth/tests/data/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Django URL patterns for running tests.
 """
diff --git a/plinth/tests/test_actions.py b/plinth/tests/test_actions.py
index 739ac4a74..e922ed237 100644
--- a/plinth/tests/test_actions.py
+++ b/plinth/tests/test_actions.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for actions utilities that modify configuration.
 
diff --git a/plinth/tests/test_app.py b/plinth/tests/test_app.py
index e014b3ca7..444ba77f3 100644
--- a/plinth/tests/test_app.py
+++ b/plinth/tests/test_app.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for App, base class for all applications.
 """
diff --git a/plinth/tests/test_cfg.py b/plinth/tests/test_cfg.py
index 486aa84af..f33c2c586 100644
--- a/plinth/tests/test_cfg.py
+++ b/plinth/tests/test_cfg.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for configuration module.
 """
diff --git a/plinth/tests/test_clients.py b/plinth/tests/test_clients.py
index 4b05e26d9..99531603d 100644
--- a/plinth/tests/test_clients.py
+++ b/plinth/tests/test_clients.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for clients module.
 """
diff --git a/plinth/tests/test_context_processors.py b/plinth/tests/test_context_processors.py
index 0df93bcf2..867c30000 100644
--- a/plinth/tests/test_context_processors.py
+++ b/plinth/tests/test_context_processors.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for custom context processors.
 """
diff --git a/plinth/tests/test_custom_shortcuts.py b/plinth/tests/test_custom_shortcuts.py
index 5b860d03d..57a1b7505 100644
--- a/plinth/tests/test_custom_shortcuts.py
+++ b/plinth/tests/test_custom_shortcuts.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for custom shortcuts.
 """
diff --git a/plinth/tests/test_daemon.py b/plinth/tests/test_daemon.py
index 6a969fa6f..e9e49edbc 100644
--- a/plinth/tests/test_daemon.py
+++ b/plinth/tests/test_daemon.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for component managing system daemons and other systemd units.
 """
diff --git a/plinth/tests/test_frontpage.py b/plinth/tests/test_frontpage.py
index 1566a5b4b..86cad2072 100644
--- a/plinth/tests/test_frontpage.py
+++ b/plinth/tests/test_frontpage.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for frontpage.
 """
diff --git a/plinth/tests/test_kvstore.py b/plinth/tests/test_kvstore.py
index 81973b3db..b4e3d687e 100644
--- a/plinth/tests/test_kvstore.py
+++ b/plinth/tests/test_kvstore.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for key/value store.
 """
diff --git a/plinth/tests/test_menu.py b/plinth/tests/test_menu.py
index 7150c5471..bc953f87c 100644
--- a/plinth/tests/test_menu.py
+++ b/plinth/tests/test_menu.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for menus.
 """
diff --git a/plinth/tests/test_middleware.py b/plinth/tests/test_middleware.py
index bb98a0814..8567c70d1 100644
--- a/plinth/tests/test_middleware.py
+++ b/plinth/tests/test_middleware.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for custom middleware.
 """
diff --git a/plinth/tests/test_network.py b/plinth/tests/test_network.py
index fabf8bb57..a2a40c234 100644
--- a/plinth/tests/test_network.py
+++ b/plinth/tests/test_network.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for network configuration utilities.
 """
diff --git a/plinth/tests/test_notification.py b/plinth/tests/test_notification.py
index 1275e79ce..b83d6d3b5 100644
--- a/plinth/tests/test_notification.py
+++ b/plinth/tests/test_notification.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for Notification, API to show notificatoins.
 """
diff --git a/plinth/tests/test_templatetags.py b/plinth/tests/test_templatetags.py
index 4326a4422..c3b51ec65 100644
--- a/plinth/tests/test_templatetags.py
+++ b/plinth/tests/test_templatetags.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for custom Django template tags.
 """
diff --git a/plinth/tests/test_utils.py b/plinth/tests/test_utils.py
index af4373f32..491f9ad8d 100644
--- a/plinth/tests/test_utils.py
+++ b/plinth/tests/test_utils.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Test module for utilities.
 """
diff --git a/plinth/translation.py b/plinth/translation.py
index 2f96282d7..3289f981c 100644
--- a/plinth/translation.py
+++ b/plinth/translation.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Utility methods for managing translations.
 """
diff --git a/plinth/urls.py b/plinth/urls.py
index 07ecf7265..8d69881ed 100644
--- a/plinth/urls.py
+++ b/plinth/urls.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Django URLconf file containing all urls
 """
diff --git a/plinth/utils.py b/plinth/utils.py
index f77b300cc..cf238411b 100644
--- a/plinth/utils.py
+++ b/plinth/utils.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Miscellaneous utility methods.
 """
diff --git a/plinth/views.py b/plinth/views.py
index fc5219f34..eb288422d 100644
--- a/plinth/views.py
+++ b/plinth/views.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Main FreedomBox views.
 """
diff --git a/plinth/web_framework.py b/plinth/web_framework.py
index 98dd177e6..e4a709adc 100644
--- a/plinth/web_framework.py
+++ b/plinth/web_framework.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Setup Django web framework.
 """
diff --git a/plinth/web_server.py b/plinth/web_server.py
index a05679d3d..27d86ab15 100644
--- a/plinth/web_server.py
+++ b/plinth/web_server.py
@@ -1,19 +1,4 @@
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Setup CherryPy web server.
 """
diff --git a/run b/run
index 22548efe1..0d19015bd 100755
--- a/run
+++ b/run
@@ -1,19 +1,6 @@
 #!/usr/bin/python3
 #
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# SPDX-License-Identifier: AGPL-3.0-or-later
 #
 
 import plinth.__main__
diff --git a/setup.py b/setup.py
index 136197592..84be633ca 100755
--- a/setup.py
+++ b/setup.py
@@ -1,20 +1,5 @@
 #!/usr/bin/python3
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 FreedomBox Service setup file.
 """
diff --git a/vagrant-scripts/plinth-user-permissions.py b/vagrant-scripts/plinth-user-permissions.py
index bca08d1c6..e081446c3 100755
--- a/vagrant-scripts/plinth-user-permissions.py
+++ b/vagrant-scripts/plinth-user-permissions.py
@@ -1,21 +1,6 @@
 #!/usr/bin/python3
 # -*- mode: python -*-
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Set required permissions for user "plinth" to run plinth in the development
 environment.
diff --git a/vagrant-scripts/post-box-destroy.py b/vagrant-scripts/post-box-destroy.py
index c004c2c23..ada4c2946 100755
--- a/vagrant-scripts/post-box-destroy.py
+++ b/vagrant-scripts/post-box-destroy.py
@@ -1,21 +1,6 @@
 #!/usr/bin/python3
 # -*- mode: python -*-
-#
-# This file is part of FreedomBox.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as
-# published by the Free Software Foundation, either version 3 of the
-# License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
 Cleanup actions to be run when a vagrant box is destroyed.
 """