diff --git a/tools/patman/patman.py b/tools/patman/patman.py
index 0187ebe1d4bf79d3f37b414adf3ac2389df9fb98..cf53e532ddf8e89fd72dcbe9a7b627c92297942b 100755
--- a/tools/patman/patman.py
+++ b/tools/patman/patman.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # SPDX-License-Identifier: GPL-2.0+
 #
 # Copyright (c) 2011 The Chromium OS Authors.