diff --git a/apiclient/__init__.py b/apiclient/__init__.py
index f901408..6a74889 100644
--- a/apiclient/__init__.py
+++ b/apiclient/__init__.py
@@ -1 +1,15 @@
+# Copyright (C) 2012 Google Inc.
+#
+# 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.
+
 __version__ = "1.1"
diff --git a/oauth2client/locked_file.py b/oauth2client/locked_file.py
index 26f783e..31514dc 100644
--- a/oauth2client/locked_file.py
+++ b/oauth2client/locked_file.py
@@ -1,4 +1,16 @@
-# Copyright 2011 Google Inc. All Rights Reserved.
+# Copyright 2011 Google Inc.
+#
+# 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.
 
 """Locked file interface that should work on Unix and Windows pythons.
 
diff --git a/oauth2client/multistore_file.py b/oauth2client/multistore_file.py
index 4d2c091..ce7a519 100644
--- a/oauth2client/multistore_file.py
+++ b/oauth2client/multistore_file.py
@@ -1,4 +1,16 @@
-# Copyright 2011 Google Inc. All Rights Reserved.
+# Copyright 2011 Google Inc.
+#
+# 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.
 
 """Multi-credential file store with lock support.