diff --git a/cloud/shepherd/shepherd.go b/cloud/shepherd/shepherd.go
index 2c2a655..aeaab46 100644
--- a/cloud/shepherd/shepherd.go
+++ b/cloud/shepherd/shepherd.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package shepherd
 
 import (