diff --git a/bestflags/generation.py b/bestflags/generation.py
index 1a0ad4c..f1a6363 100644
--- a/bestflags/generation.py
+++ b/bestflags/generation.py
@@ -1,3 +1,7 @@
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
 """A generation of a set of tasks.
 
 Part of the Chrome build flags optimization.
diff --git a/bestflags/generation_test.py b/bestflags/generation_test.py
index a8bdf59..748a988 100644
--- a/bestflags/generation_test.py
+++ b/bestflags/generation_test.py
@@ -1,3 +1,7 @@
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
 """Generation unittest.
 
 Part of the Chrome build flags optimization.
diff --git a/bestflags/mock_task.py b/bestflags/mock_task.py
index 2582f11..059536c 100644
--- a/bestflags/mock_task.py
+++ b/bestflags/mock_task.py
@@ -1,3 +1,7 @@
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
 """This module defines the common mock task used by varies unit tests.
 
 Part of the Chrome build flags optimization.
diff --git a/bestflags/pipeline_process.py b/bestflags/pipeline_process.py
index 20f77ab..8c98fdb 100644
--- a/bestflags/pipeline_process.py
+++ b/bestflags/pipeline_process.py
@@ -1,3 +1,7 @@
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
 """Pipeline process that encapsulates the actual content.
 
 Part of the Chrome build flags optimization.
diff --git a/bestflags/pipeline_process_test.py b/bestflags/pipeline_process_test.py
index b595685..1d5af49 100644
--- a/bestflags/pipeline_process_test.py
+++ b/bestflags/pipeline_process_test.py
@@ -1,3 +1,7 @@
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
 """Pipeline Process unittest.
 
 Part of the Chrome build flags optimization.
diff --git a/bestflags/pipeline_worker.py b/bestflags/pipeline_worker.py
index 6ec28fe..7cccaea 100644
--- a/bestflags/pipeline_worker.py
+++ b/bestflags/pipeline_worker.py
@@ -1,3 +1,7 @@
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
 """The pipeline_worker functions of the build and test stage of the framework.
 
 Part of the Chrome build flags optimization.
diff --git a/bestflags/pipeline_worker_test.py b/bestflags/pipeline_worker_test.py
index 98d141d..4ed6e35 100644
--- a/bestflags/pipeline_worker_test.py
+++ b/bestflags/pipeline_worker_test.py
@@ -1,3 +1,7 @@
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
 """Unittest for the pipeline_worker functions in the build/test stage.
 
 Part of the Chrome build flags optimization.
diff --git a/bestflags/steering.py b/bestflags/steering.py
index 8312924..ce718a4 100644
--- a/bestflags/steering.py
+++ b/bestflags/steering.py
@@ -1,3 +1,7 @@
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
 """A Genetic Algorithm implementation for selecting good flags.
 
 Part of the Chrome build flags optimization.
diff --git a/bestflags/steering_test.py b/bestflags/steering_test.py
index cdda67b..828d226 100644
--- a/bestflags/steering_test.py
+++ b/bestflags/steering_test.py
@@ -1,3 +1,7 @@
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
 """Steering stage unittest.
 
 Part of the Chrome build flags optimization.
diff --git a/bestflags/task.py b/bestflags/task.py
index 687a829..b1319ca 100644
--- a/bestflags/task.py
+++ b/bestflags/task.py
@@ -1,3 +1,7 @@
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
 """A reproducing entity.
 
 Part of the Chrome build flags optimization.
diff --git a/bestflags/task_test.py b/bestflags/task_test.py
index 4a76db0..ec3d5b6 100644
--- a/bestflags/task_test.py
+++ b/bestflags/task_test.py
@@ -1,3 +1,7 @@
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
 """Task unittest.
 
 Part of the Chrome build flags optimization.