diff --git a/pkg/issuer/acme/dns/acmedns/acmedns.go b/pkg/issuer/acme/dns/acmedns/acmedns.go
index d408bc2de..a61b35710 100644
--- a/pkg/issuer/acme/dns/acmedns/acmedns.go
+++ b/pkg/issuer/acme/dns/acmedns/acmedns.go
@@ -1,3 +1,19 @@
+/*
+Copyright 2018 The Jetstack cert-manager contributors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
 // Package acmedns implements a DNS provider for solving DNS-01 challenges using
 // Joohoi's acme-dns project. For more information see the ACME-DNS homepage:
 //    https://github.com/joohoi/acme-dns
diff --git a/pkg/issuer/acme/dns/acmedns/acmedns_test.go b/pkg/issuer/acme/dns/acmedns/acmedns_test.go
index cf770afec..a411ca118 100644
--- a/pkg/issuer/acme/dns/acmedns/acmedns_test.go
+++ b/pkg/issuer/acme/dns/acmedns/acmedns_test.go
@@ -1,3 +1,19 @@
+/*
+Copyright 2018 The Jetstack cert-manager contributors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
 package acmedns
 
 import (