diff --git a/tests/charms/layers/metrics-proxy-ci/config.yaml b/tests/charms/layers/metrics-proxy-ci/config.yaml
index 51f2ce4..8bde313 100644
--- a/tests/charms/layers/metrics-proxy-ci/config.yaml
+++ b/tests/charms/layers/metrics-proxy-ci/config.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019 Canonical Ltd.
+#
+# 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.
+
 options:
   string-option:
     type: string
diff --git a/tests/charms/layers/metrics-proxy-ci/layer.yaml b/tests/charms/layers/metrics-proxy-ci/layer.yaml
index 790dee6..186f1db 100644
--- a/tests/charms/layers/metrics-proxy-ci/layer.yaml
+++ b/tests/charms/layers/metrics-proxy-ci/layer.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019 Canonical Ltd.
+#
+# 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.
+
 includes:
     - 'layer:basic'
     - 'layer:vnfproxy'
diff --git a/tests/charms/layers/metrics-proxy-ci/metadata.yaml b/tests/charms/layers/metrics-proxy-ci/metadata.yaml
index ae42434..78bf753 100644
--- a/tests/charms/layers/metrics-proxy-ci/metadata.yaml
+++ b/tests/charms/layers/metrics-proxy-ci/metadata.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019 Canonical Ltd.
+#
+# 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.
+
 name: metrics-proxy-ci
 summary: <Fill in summary here>
 maintainer: Adam Israel <Adam.Israel@ronin>
diff --git a/tests/charms/layers/metrics-proxy-ci/metrics.yaml b/tests/charms/layers/metrics-proxy-ci/metrics.yaml
index dae092f..2326f6c 100644
--- a/tests/charms/layers/metrics-proxy-ci/metrics.yaml
+++ b/tests/charms/layers/metrics-proxy-ci/metrics.yaml
@@ -1,3 +1,17 @@
+# Copyright 2019 Canonical Ltd.
+#
+# 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.
+
 metrics:
   users:
     type: gauge
diff --git a/tests/charms/layers/metrics-proxy-ci/reactive/metrics_ci.py b/tests/charms/layers/metrics-proxy-ci/reactive/metrics_ci.py
index 51ce49e..ea5c544 100644
--- a/tests/charms/layers/metrics-proxy-ci/reactive/metrics_ci.py
+++ b/tests/charms/layers/metrics-proxy-ci/reactive/metrics_ci.py
@@ -1,3 +1,17 @@
+# Copyright 2019 Canonical Ltd.
+#
+# 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.
+
 from charmhelpers.core.hookenv import (
     status_set,
 )