diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index b4e71a49354..0d835a7de17 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.7
+#!/usr/bin/env python
 # Copyright 2015, Google Inc.
 # All rights reserved.
 #