diff --git a/codecheck/cpplint.py b/codecheck/cpplint.py
old mode 100644
new mode 100755
index a080437d..d9c6010a
--- a/codecheck/cpplint.py
+++ b/codecheck/cpplint.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # Copyright (c) 2009 Google Inc. All rights reserved.
 #
diff --git a/tools/check_test_ran.py b/tools/check_test_ran.py
index f5eac476..160b4b17 100755
--- a/tools/check_test_ran.py
+++ b/tools/check_test_ran.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Software License Agreement (BSD License)
 #
 # Copyright (c) 2008, Willow Garage, Inc.