diff --git a/tools/pyboard.py b/tools/pyboard.py
index 51806a3299..a0b4ac3200 100755
--- a/tools/pyboard.py
+++ b/tools/pyboard.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # This file is part of the MicroPython project, http://micropython.org/
 #