diff --git a/plinth/modules/help/templates/help_about.html b/plinth/modules/help/templates/help_about.html
index 4dddbcfb4..5484c85a3 100644
--- a/plinth/modules/help/templates/help_about.html
+++ b/plinth/modules/help/templates/help_about.html
@@ -65,6 +65,19 @@
     {% endblocktrans %}
   </p>
 
+  <p>
+    {% blocktrans trimmed %}
+      {{ box_name }} is free software, licensed under the GNU Affero
+      General Public License. The source code is available online at the
+      <a href="https://salsa.debian.org/freedombox-team/freedombox">
+        {{ box_name }} repository</a>.  In addition, the source code of
+      any Debian package can be obtained from the
+      <a href="https://sources.debian.org/">Debian Sources</a> site,
+      or by running "apt source <i>package_name</i>" in a terminal
+      (using Cockpit or SSH).
+    {% endblocktrans %}
+  </p>
+
   <p>
     {% blocktrans trimmed %}
       For more information about the {{ box_name }} project, see the