diff --git a/Lib/timeit.py b/Lib/timeit.py
index 7b9b72c..63d94ca 100644
--- a/Lib/timeit.py
+++ b/Lib/timeit.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 """Tool for measuring execution time of small code snippets.