/usr/bin/env python -> /usr/bin/env python2.7
diff --git a/tools/run_tests/artifact_targets.py b/tools/run_tests/artifact_targets.py
index 32a98c9..5738256 100644
--- a/tools/run_tests/artifact_targets.py
+++ b/tools/run_tests/artifact_targets.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2.7
 # Copyright 2016, Google Inc.
 # All rights reserved.
 #