diff --git a/core/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/logmanager/package-info.java b/core/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/logmanager/package-info.java
index 87eb71e..3b6f38c 100644
--- a/core/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/logmanager/package-info.java
+++ b/core/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/logmanager/package-info.java
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: © 2021 Matthias Andreas Benkard <code@mail.matthias.benkard.de>
+//
+// SPDX-License-Identifier: LGPL-3.0-or-later
+
 /**
  * Integration with JBoss Log Manager and {@link java.util.logging}.
  *