diff --git a/build/watch b/build/watch
index 3a7c91f..37a1d3f 100755
--- a/build/watch
+++ b/build/watch
@@ -1 +1,3 @@
+#!/usr/bin/env bash
+
 "`dirname $0`/../node_modules/lumbar/bin/lumbar" watch "$@" "`dirname $0`/out"
\ No newline at end of file