diff --git a/defaults/main.yaml b/defaults/main.yaml
index 0779519..b17bf1c 100644
--- a/defaults/main.yaml
+++ b/defaults/main.yaml
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2025 Max Mehl <https://mehl.mx>
+#
+# SPDX-License-Identifier: Apache-2.0
+
 ---
 seafile_cron:
   minute: "20"