diff --git a/images/ebs-warmup/warmup-steps.sh b/images/ebs-warmup/warmup-steps.sh
index 0c4ce2b51e..6720ca9a1a 100644
--- a/images/ebs-warmup/warmup-steps.sh
+++ b/images/ebs-warmup/warmup-steps.sh
@@ -1,4 +1,5 @@
 #! /usr/bin/env sh
+
 # Copyright 2023 PingCAP, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");