diff --git a/tensorboard/tools/whitespace_hygiene_test.py b/tensorboard/tools/whitespace_hygiene_test.py
index 1c4946a18d..92b5d331e9 100755
--- a/tensorboard/tools/whitespace_hygiene_test.py
+++ b/tensorboard/tools/whitespace_hygiene_test.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python3
 # Copyright 2019 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");