diff --git a/internal/git/transport.go b/internal/git/transport.go
index ece40fb3..8432b42c 100644
--- a/internal/git/transport.go
+++ b/internal/git/transport.go
@@ -1,3 +1,19 @@
+/*
+Copyright 2020 The Flux CD 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 git
 
 import (
diff --git a/internal/git/transport_test.go b/internal/git/transport_test.go
index 6143c9fb..e05e99b9 100644
--- a/internal/git/transport_test.go
+++ b/internal/git/transport_test.go
@@ -1,3 +1,19 @@
+/*
+Copyright 2020 The Flux CD 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 git
 
 import (
diff --git a/internal/helm/getter.go b/internal/helm/getter.go
index c8b9234e..ad1897dd 100644
--- a/internal/helm/getter.go
+++ b/internal/helm/getter.go
@@ -1,3 +1,19 @@
+/*
+Copyright 2020 The Flux CD 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 helm
 
 import (
diff --git a/internal/helm/getter_test.go b/internal/helm/getter_test.go
index 40986fd9..58e0fc63 100644
--- a/internal/helm/getter_test.go
+++ b/internal/helm/getter_test.go
@@ -1,3 +1,19 @@
+/*
+Copyright 2020 The Flux CD 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 helm
 
 import (
diff --git a/internal/testserver/helm.go b/internal/testserver/helm.go
index db0ddf5e..24b9ec16 100644
--- a/internal/testserver/helm.go
+++ b/internal/testserver/helm.go
@@ -1,3 +1,19 @@
+/*
+Copyright 2020 The Flux CD 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 testserver
 
 import (
diff --git a/internal/testserver/http.go b/internal/testserver/http.go
index 95f68dee..166b153f 100644
--- a/internal/testserver/http.go
+++ b/internal/testserver/http.go
@@ -1,3 +1,19 @@
+/*
+Copyright 2020 The Flux CD 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 testserver
 
 import (