diff --git a/osbase/net/dns/kubernetes/kubernetes.go b/osbase/net/dns/kubernetes/kubernetes.go
index efcb60e..b69d132 100644
--- a/osbase/net/dns/kubernetes/kubernetes.go
+++ b/osbase/net/dns/kubernetes/kubernetes.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package kubernetes provides the kubernetes backend.
 package kubernetes