diff --git a/power-sequencer/gen-ucd90160-defs.py b/power-sequencer/gen-ucd90160-defs.py
index 1eb0d06..b191ef6 100755
--- a/power-sequencer/gen-ucd90160-defs.py
+++ b/power-sequencer/gen-ucd90160-defs.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import os
 import yaml