diff --git a/scripts/merge-pr.sh b/scripts/merge-pr.sh
index 0b4cbaf387..9d22212c64 100755
--- a/scripts/merge-pr.sh
+++ b/scripts/merge-pr.sh
@@ -1,6 +1,6 @@
-#!/usr/bin/env sh
+#!/bin/bash
 
-set -euf pipefail
+set -eof pipefail
 
 BRANCH=$1
 if [[ $# -eq 0 ]] ; then