diff --git a/SECURITY.md b/SECURITY.md
index 133723221..75100dbf0 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -1,3 +1,9 @@
+<!--
+SPDX-FileCopyrightText: 2023 XWiki CryptPad Team <contact@cryptpad.org> and contributors
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+-->
+
 # Security Policy
 
 ## Supported Versions
diff --git a/docs/example.httpd.conf b/docs/example.httpd.conf
index d8b0d8d00..f98b505f2 100644
--- a/docs/example.httpd.conf
+++ b/docs/example.httpd.conf
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2023 XWiki CryptPad Team <contact@cryptpad.org> and contributors
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
 #   This file is included strictly as an example of how Apache httpd can be
 #   configured to work with CryptPad. If you are using CryptPad in production
 #   and require professional support please contact sales@cryptpad.fr
diff --git a/lib/plugins/README.md b/lib/plugins/README.md
index 70e448011..dd2d15af2 100644
--- a/lib/plugins/README.md
+++ b/lib/plugins/README.md
@@ -1 +1,7 @@
+<!--
+SPDX-FileCopyrightText: 2023 XWiki CryptPad Team <contact@cryptpad.org> and contributors
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+-->
+
 # CryptPad's plugins directory