diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index cad8a4e..7f26f4a 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -1,3 +1,11 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2025 I-Form Advanced Manufacturing Research Centre.
+#
+# invenio-theme-iform is free software; you can redistribute it and/or
+# modify it under the terms of the MIT License; see LICENSE file for more
+# details.
+
 name: CI
 
 on: