diff --git a/buildkite/create_images.py b/buildkite/create_images.py
index 9b4be33..4bd8a6e 100755
--- a/buildkite/create_images.py
+++ b/buildkite/create_images.py
@@ -1,4 +1,18 @@
 #!/usr/bin/env python3
+#
+# Copyright 2018 The Bazel Authors. All rights reserved.
+#
+# 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.
 
 import getpass
 import json
diff --git a/buildkite/create_instance_groups.py b/buildkite/create_instance_groups.py
index 9fc26d0..423b340 100755
--- a/buildkite/create_instance_groups.py
+++ b/buildkite/create_instance_groups.py
@@ -1,4 +1,18 @@
 #!/usr/bin/env python3
+#
+# Copyright 2018 The Bazel Authors. All rights reserved.
+#
+# 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.
 
 import queue
 import re
diff --git a/buildkite/create_worker.py b/buildkite/create_worker.py
index c94d35f..4cbc626 100755
--- a/buildkite/create_worker.py
+++ b/buildkite/create_worker.py
@@ -1,4 +1,18 @@
 #!/usr/bin/env python3
+#
+# Copyright 2018 The Bazel Authors. All rights reserved.
+#
+# 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.
 
 import getpass
 import queue