diff --git a/cloud/bmaas/bmdb/backoff_test.go b/cloud/bmaas/bmdb/backoff_test.go
index 9d22f2a..19d3f51 100644
--- a/cloud/bmaas/bmdb/backoff_test.go
+++ b/cloud/bmaas/bmdb/backoff_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package bmdb
 
 import (