diff --git a/osbase/net/dns/forward/up/up.go b/osbase/net/dns/forward/up/up.go
index 9806319..3b208d9 100644
--- a/osbase/net/dns/forward/up/up.go
+++ b/osbase/net/dns/forward/up/up.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package up is used to run a function for some duration. If a new function is
 // added while a previous run is still ongoing, nothing new will be executed.
 package up
diff --git a/osbase/net/dns/forward/up/up_test.go b/osbase/net/dns/forward/up/up_test.go
index 0d0f928..acf3b96 100644
--- a/osbase/net/dns/forward/up/up_test.go
+++ b/osbase/net/dns/forward/up/up_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package up
 
 // Taken and modified from CoreDNS, under Apache 2.0.