diff --git a/bin/kaleidoscope-builder b/bin/kaleidoscope-builder
index c95cfb88..6f5fb38c 100755
--- a/bin/kaleidoscope-builder
+++ b/bin/kaleidoscope-builder
@@ -1,4 +1,4 @@
-#! /bin/sh
+#!/usr/bin/env bash
 
 set -e