diff --git a/osbase/net/dns/kubernetes/handler.go b/osbase/net/dns/kubernetes/handler.go
index e6adf84..000ea1f 100644
--- a/osbase/net/dns/kubernetes/handler.go
+++ b/osbase/net/dns/kubernetes/handler.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package kubernetes
 
 import (