diff --git a/test/Driver/Dependencies/Inputs/fail.py b/test/Driver/Dependencies/Inputs/fail.py
index 95c72f8c19a10..9f14a97404f7a 100755
--- a/test/Driver/Dependencies/Inputs/fail.py
+++ b/test/Driver/Dependencies/Inputs/fail.py
@@ -1,3 +1,12 @@
 #!/usr/bin/env python
+# fail.py - Just exits with an error code -*- python -*-
+#
+# This source file is part of the Swift.org open source project
+#
+# Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
+# Licensed under Apache License v2.0 with Runtime Library Exception
+#
+# See http://swift.org/LICENSE.txt for license information
+# See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 
 exit(1)
diff --git a/test/Driver/Dependencies/Inputs/fake-build-for-bitcode.py b/test/Driver/Dependencies/Inputs/fake-build-for-bitcode.py
index 58072fa75a932..fa734eb9222e7 100755
--- a/test/Driver/Dependencies/Inputs/fake-build-for-bitcode.py
+++ b/test/Driver/Dependencies/Inputs/fake-build-for-bitcode.py
@@ -1,7 +1,20 @@
 #!/usr/bin/env python
-
+# fake-build-for-bitcode.py - Fake build with -embed-bitcode -*- python -*-
+#
+# This source file is part of the Swift.org open source project
+#
+# Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
+# Licensed under Apache License v2.0 with Runtime Library Exception
+#
+# See http://swift.org/LICENSE.txt for license information
+# See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+#
+# ----------------------------------------------------------------------------
+#
 # Emulates the frontend of an -embed-bitcode job. That means we have to handle
 # -emit-bc and -c actions.
+#
+# ----------------------------------------------------------------------------
 
 from __future__ import print_function
 
diff --git a/test/Driver/Dependencies/Inputs/fake-build-whole-module.py b/test/Driver/Dependencies/Inputs/fake-build-whole-module.py
index 22b938888c40c..2a8735d4637bd 100755
--- a/test/Driver/Dependencies/Inputs/fake-build-whole-module.py
+++ b/test/Driver/Dependencies/Inputs/fake-build-whole-module.py
@@ -1,6 +1,19 @@
 #!/usr/bin/env python
-
+# fake-build-for-whole-module.py - Optimized fake build -*- python -*-
+#
+# This source file is part of the Swift.org open source project
+#
+# Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
+# Licensed under Apache License v2.0 with Runtime Library Exception
+#
+# See http://swift.org/LICENSE.txt for license information
+# See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+#
+# ----------------------------------------------------------------------------
+#
 # Emulates the frontend of a -whole-module-optimization compilation.
+#
+# ----------------------------------------------------------------------------
 
 from __future__ import print_function
 
diff --git a/test/Driver/Dependencies/Inputs/modify-non-primary-files.py b/test/Driver/Dependencies/Inputs/modify-non-primary-files.py
index 4866a8d26401c..dda4d54ac1cb4 100755
--- a/test/Driver/Dependencies/Inputs/modify-non-primary-files.py
+++ b/test/Driver/Dependencies/Inputs/modify-non-primary-files.py
@@ -1,7 +1,20 @@
 #!/usr/bin/env python
-
+# modify-non-primary-files.py - Fake build while modifying files -*- python -*-
+#
+# This source file is part of the Swift.org open source project
+#
+# Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
+# Licensed under Apache License v2.0 with Runtime Library Exception
+#
+# See http://swift.org/LICENSE.txt for license information
+# See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+#
+# ----------------------------------------------------------------------------
+#
 # modify-non-primary-files.py simulates a build where the user is modifying the
 # source files during compilation.
+#
+# ----------------------------------------------------------------------------
 
 from __future__ import print_function
 
diff --git a/test/Driver/Dependencies/Inputs/touch.py b/test/Driver/Dependencies/Inputs/touch.py
index cf750c3402073..7ef4791de45be 100755
--- a/test/Driver/Dependencies/Inputs/touch.py
+++ b/test/Driver/Dependencies/Inputs/touch.py
@@ -1,6 +1,19 @@
 #!/usr/bin/env python
-
+# touch.py - /bin/touch that writes the LLVM epoch -*- python -*-
+#
+# This source file is part of the Swift.org open source project
+#
+# Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
+# Licensed under Apache License v2.0 with Runtime Library Exception
+#
+# See http://swift.org/LICENSE.txt for license information
+# See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+#
+# ----------------------------------------------------------------------------
+#
 # Like /bin/touch, but takes a time using the LLVM epoch.
+#
+# ----------------------------------------------------------------------------
 
 import os
 import sys
diff --git a/test/Driver/Dependencies/Inputs/update-dependencies-bad.py b/test/Driver/Dependencies/Inputs/update-dependencies-bad.py
index b427b50ab8099..07a9dfae10a02 100755
--- a/test/Driver/Dependencies/Inputs/update-dependencies-bad.py
+++ b/test/Driver/Dependencies/Inputs/update-dependencies-bad.py
@@ -1,7 +1,20 @@
 #!/usr/bin/env python
-
+# update-dependencies-bad.py - Fails on bad.swift -*- python -*-
+#
+# This source file is part of the Swift.org open source project
+#
+# Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
+# Licensed under Apache License v2.0 with Runtime Library Exception
+#
+# See http://swift.org/LICENSE.txt for license information
+# See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+#
+# ----------------------------------------------------------------------------
+#
 # Fails if the input file is named "bad.swift"; otherwise dispatches to
 # update-dependencies.py.
+#
+# ----------------------------------------------------------------------------
 
 from __future__ import print_function
 
diff --git a/test/Driver/Dependencies/Inputs/update-dependencies.py b/test/Driver/Dependencies/Inputs/update-dependencies.py
index 0ab62eefe3e09..b6145cc4da193 100755
--- a/test/Driver/Dependencies/Inputs/update-dependencies.py
+++ b/test/Driver/Dependencies/Inputs/update-dependencies.py
@@ -1,7 +1,18 @@
 #!/usr/bin/env python
-
-# update-dependencies.py simulates a Swift compilation for the purposes of
-# dependency analysis. That means it has two tasks:
+# update-dependencies.py - Fake build for dependency analysis -*- python -*-
+#
+# This source file is part of the Swift.org open source project
+#
+# Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
+# Licensed under Apache License v2.0 with Runtime Library Exception
+#
+# See http://swift.org/LICENSE.txt for license information
+# See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+#
+# ----------------------------------------------------------------------------
+#
+# Simulates a Swift compilation for the purposes of dependency analysis.
+# That means this has two tasks:
 #
 # 1. Update the main output of the compilation job.
 # 2. Update the associated dependencies file, in case anything changed.
@@ -13,6 +24,8 @@
 # the old dependencies (if present).
 #
 # If invoked in non-primary-file mode, it only creates the output file.
+#
+# ----------------------------------------------------------------------------
 
 from __future__ import print_function