diff --git a/test/repos/merge_conflict.sh b/test/repos/merge_conflict.sh
index ca3fb13b9..88b5bfc18 100755
--- a/test/repos/merge_conflict.sh
+++ b/test/repos/merge_conflict.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 set -ex; rm -rf repo; mkdir repo; cd repo
 
 git init