diff --git a/smeargle.py b/smeargle.py
old mode 100644
new mode 100755
index 62b6ce8..d7a9787
--- a/smeargle.py
+++ b/smeargle.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # Copyright 2018 Kiyoshi Aman
 #
 # Permission to use, copy, modify, and/or distribute this software for any