diff --git a/firmware/tools/make_spi_image.py b/firmware/tools/make_spi_image.py
index 983e7c6e..a7151793 100755
--- a/firmware/tools/make_spi_image.py
+++ b/firmware/tools/make_spi_image.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 #
 # Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.