diff --git a/utils/carry4delays.py b/utils/carry4delays.py
index dd4d7d56..a847424e 100755
--- a/utils/carry4delays.py
+++ b/utils/carry4delays.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3.6
+#!/usr/bin/env python3
 
 import sys, os, argparse
 from sdf_timing import sdfparse