diff --git a/alias/alias.go b/alias/alias.go
index 8c45ffd..1ea5fda 100644
--- a/alias/alias.go
+++ b/alias/alias.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 alias
 
 import (
diff --git a/alias/alias_test.go b/alias/alias_test.go
index aeb3b47..53fb5c6 100644
--- a/alias/alias_test.go
+++ b/alias/alias_test.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 alias
 
 import (
diff --git a/browser/browser.go b/browser/browser.go
index c896ded..36d2480 100644
--- a/browser/browser.go
+++ b/browser/browser.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 browser
 
 import (
diff --git a/cli/circleci.go b/cli/circleci.go
index b8e0d64..ddd7534 100644
--- a/cli/circleci.go
+++ b/cli/circleci.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 cli
 
 import (
diff --git a/cli/datadog.go b/cli/datadog.go
index 4d5fc58..3e1d7bf 100644
--- a/cli/datadog.go
+++ b/cli/datadog.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 cli
 
 import (
diff --git a/cli/gcp.go b/cli/gcp.go
index 68e0c0c..64b9370 100644
--- a/cli/gcp.go
+++ b/cli/gcp.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 cli
 
 import (
diff --git a/cli/github.go b/cli/github.go
index 3350074..b6c99ec 100644
--- a/cli/github.go
+++ b/cli/github.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 cli
 
 import (
diff --git a/cli/google.go b/cli/google.go
index ec2964b..e82afc0 100644
--- a/cli/google.go
+++ b/cli/google.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 cli
 
 import (
diff --git a/cli/pagerduty.go b/cli/pagerduty.go
index cd6475d..1dc4adb 100644
--- a/cli/pagerduty.go
+++ b/cli/pagerduty.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 cli
 
 import (
diff --git a/cli/root.go b/cli/root.go
index 6a43548..f838dcb 100644
--- a/cli/root.go
+++ b/cli/root.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 cli
 
 import (
diff --git a/cli/version.go b/cli/version.go
index 012888a..3617026 100644
--- a/cli/version.go
+++ b/cli/version.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 cli
 
 import (
diff --git a/cli/youtube.go b/cli/youtube.go
index e8f0349..a6ebed8 100644
--- a/cli/youtube.go
+++ b/cli/youtube.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 cli
 
 import (
diff --git a/cmd/biko/biko.go b/cmd/biko/biko.go
index d173f9d..c050715 100644
--- a/cmd/biko/biko.go
+++ b/cmd/biko/biko.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 main
 
 import (
diff --git a/providers/circleci/circleci.go b/providers/circleci/circleci.go
index 21237f2..a84770b 100644
--- a/providers/circleci/circleci.go
+++ b/providers/circleci/circleci.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 circleci
 
 import (
diff --git a/providers/datadog/datadog.go b/providers/datadog/datadog.go
index 61fd508..5739584 100644
--- a/providers/datadog/datadog.go
+++ b/providers/datadog/datadog.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 datadog
 
 import (
diff --git a/providers/gcp/gcp.go b/providers/gcp/gcp.go
index 92434d1..f454abd 100644
--- a/providers/gcp/gcp.go
+++ b/providers/gcp/gcp.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 gcp
 
 import (
diff --git a/providers/gcp/gcp_test.go b/providers/gcp/gcp_test.go
index 49f4ff3..a40bf04 100644
--- a/providers/gcp/gcp_test.go
+++ b/providers/gcp/gcp_test.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 gcp
 
 import (
diff --git a/providers/github/github.go b/providers/github/github.go
index a6a9dff..10b6fb7 100644
--- a/providers/github/github.go
+++ b/providers/github/github.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 github
 
 import (
diff --git a/providers/google/google.go b/providers/google/google.go
index cedba45..f2b78a1 100644
--- a/providers/google/google.go
+++ b/providers/google/google.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 google
 
 import (
diff --git a/providers/pagerduty/pagerduty.go b/providers/pagerduty/pagerduty.go
index c333820..67c2db4 100644
--- a/providers/pagerduty/pagerduty.go
+++ b/providers/pagerduty/pagerduty.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 pagerduty
 
 import (
diff --git a/providers/providers.go b/providers/providers.go
index 0fc19d6..50deca2 100644
--- a/providers/providers.go
+++ b/providers/providers.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 providers
 
 import "github.com/urfave/cli"
diff --git a/providers/youtube/youtube.go b/providers/youtube/youtube.go
index 0c7486a..25805c4 100644
--- a/providers/youtube/youtube.go
+++ b/providers/youtube/youtube.go
@@ -1,3 +1,17 @@
+// Copyright 2019 The Biko Authors.
+//
+// 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 youtube
 
 import (