diff --git a/cloud/bmaas/server/agent_callback_service.go b/cloud/bmaas/server/agent_callback_service.go
index 97636f7..cbd912a 100644
--- a/cloud/bmaas/server/agent_callback_service.go
+++ b/cloud/bmaas/server/agent_callback_service.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package server
 
 import (