diff --git a/bin/launch_local_dynamo.js b/bin/launch_local_dynamo.js
index d270e55..b121e4e 100755
--- a/bin/launch_local_dynamo.js
+++ b/bin/launch_local_dynamo.js
@@ -1,3 +1,4 @@
+#!/usr/bin/env node
 // Copyright 2013 The Obvious Corporation.
 
 /**