diff --git a/projects/Stacker/test/runtests b/projects/Stacker/test/runtests
index 75ac5a61ac2..a38058e962d 100755
--- a/projects/Stacker/test/runtests
+++ b/projects/Stacker/test/runtests
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 path=$1
 shift
 let $((success=0))