diff --git a/scripts/compare_screenshots.sh b/scripts/compare_screenshots.sh
index 32476784b..24480cfe8 100755
--- a/scripts/compare_screenshots.sh
+++ b/scripts/compare_screenshots.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 test -d ./tmp/output && rm -rf ./tmp/output
 mkdir -p ./tmp/{output,screenshots,baseline}