diff --git a/day-04/day-04.py b/day-04/day-04.py
index bceb51d..151c8b1 100644
--- a/day-04/day-04.py
+++ b/day-04/day-04.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 from pathlib import Path