diff --git a/gem300.rkt b/gem300.rkt
index 9d726a8..16e0250 100644
--- a/gem300.rkt
+++ b/gem300.rkt
@@ -1,3 +1,4 @@
+#! /usr/bin/env /usr/local/bin/racket
 #lang racket
 
 (require (prefix-in net: "net.rkt")