diff --git a/plinth/modules/api/__init__.py b/plinth/modules/api/__init__.py
index 44fefaed8..153718faf 100644
--- a/plinth/modules/api/__init__.py
+++ b/plinth/modules/api/__init__.py
@@ -20,3 +20,8 @@ class ApiApp(app_module.App):
         info = app_module.Info(app_id=self.app_id, version=self._version,
                                is_essential=True)
         self.add(info)
+
+    def setup(self, old_version):
+        """Install and configure the app."""
+        super().setup(old_version)
+        self.enable()
diff --git a/plinth/modules/diagnostics/__init__.py b/plinth/modules/diagnostics/__init__.py
index 7bb51f071..6931e7162 100644
--- a/plinth/modules/diagnostics/__init__.py
+++ b/plinth/modules/diagnostics/__init__.py
@@ -67,6 +67,11 @@ class DiagnosticsApp(app_module.App):
         interval = 180 if cfg.develop else 3600
         glib.schedule(interval, _warn_about_low_ram_space)
 
+    def setup(self, old_version):
+        """Install and configure the app."""
+        super().setup(old_version)
+        self.enable()
+
     def diagnose(self):
         """Run diagnostics and return the results."""
         results = super().diagnose()
diff --git a/plinth/modules/first_boot/__init__.py b/plinth/modules/first_boot/__init__.py
index 2419dea62..a608f569d 100644
--- a/plinth/modules/first_boot/__init__.py
+++ b/plinth/modules/first_boot/__init__.py
@@ -51,6 +51,11 @@ class FirstBootApp(app_module.App):
         """Perform post initialization operations."""
         post_setup.connect(_clear_first_boot_steps)
 
+    def setup(self, old_version):
+        """Install and configure the app."""
+        super().setup(old_version)
+        self.enable()
+
 
 def _clear_first_boot_steps(sender, module_name, **kwargs):
     """Flush the cache of first boot steps so it is recreated."""
diff --git a/plinth/modules/help/__init__.py b/plinth/modules/help/__init__.py
index 3517b2c28..26e317e72 100644
--- a/plinth/modules/help/__init__.py
+++ b/plinth/modules/help/__init__.py
@@ -74,3 +74,8 @@ class HelpApp(app_module.App):
         static_files = web_server.StaticFiles('static-files-help',
                                               directory_map)
         self.add(static_files)
+
+    def setup(self, old_version):
+        """Install and configure the app."""
+        super().setup(old_version)
+        self.enable()
diff --git a/plinth/modules/names/__init__.py b/plinth/modules/names/__init__.py
index a3f8162df..948486b80 100644
--- a/plinth/modules/names/__init__.py
+++ b/plinth/modules/names/__init__.py
@@ -59,6 +59,11 @@ class NamesApp(app_module.App):
         domain_added.connect(on_domain_added)
         domain_removed.connect(on_domain_removed)
 
+    def setup(self, old_version):
+        """Install and configure the app."""
+        super().setup(old_version)
+        self.enable()
+
 
 def on_domain_added(sender, domain_type, name='', description='',
                     services=None, **kwargs):
diff --git a/plinth/modules/power/__init__.py b/plinth/modules/power/__init__.py
index 51b5900ac..489fc580d 100644
--- a/plinth/modules/power/__init__.py
+++ b/plinth/modules/power/__init__.py
@@ -40,3 +40,8 @@ class PowerApp(app_module.App):
         backup_restore = BackupRestore('backup-restore-power',
                                        **manifest.backup)
         self.add(backup_restore)
+
+    def setup(self, old_version):
+        """Install and configure the app."""
+        super().setup(old_version)
+        self.enable()
diff --git a/plinth/modules/sharing/__init__.py b/plinth/modules/sharing/__init__.py
index 7498285c9..94ebf1635 100644
--- a/plinth/modules/sharing/__init__.py
+++ b/plinth/modules/sharing/__init__.py
@@ -49,6 +49,11 @@ class SharingApp(app_module.App):
                                        **manifest.backup)
         self.add(backup_restore)
 
+    def setup(self, old_version):
+        """Install and configure the app."""
+        super().setup(old_version)
+        self.enable()
+
 
 def list_shares():
     """Return a list of shares."""