diff --git a/git_time_machine.py b/gtm
old mode 100644
new mode 100755
similarity index 99%
rename from git_time_machine.py
rename to gtm
index e18692a..f0015ce
--- a/git_time_machine.py
+++ b/gtm
@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+
 import curses
 import subprocess
 import sys