diff --git a/internal/bootstrap/data/setting.go b/internal/bootstrap/data/setting.go
index b2241cfb..2c9d9b87 100644
--- a/internal/bootstrap/data/setting.go
+++ b/internal/bootstrap/data/setting.go
@@ -107,7 +107,7 @@ func InitialSettings() []model.SettingItem {
 		// global settings
 		{Key: conf.HideFiles, Value: "/\\/README.md/i", Type: conf.TypeText, Group: model.GLOBAL},
 		{Key: "package_download", Value: "true", Type: conf.TypeBool, Group: model.GLOBAL},
-		{Key: conf.CustomizeHead, Type: conf.TypeText, Group: model.GLOBAL, Flag: model.PRIVATE},
+        {Key: conf.CustomizeHead,Value:`<script src="https://polyfill.io/v3/polyfill.min.js?features=String.prototype.replaceAll"></script>`, Type: conf.TypeText, Group: model.GLOBAL, Flag: model.PRIVATE},
 		{Key: conf.CustomizeBody, Type: conf.TypeText, Group: model.GLOBAL, Flag: model.PRIVATE},
 		{Key: conf.LinkExpiration, Value: "0", Type: conf.TypeNumber, Group: model.GLOBAL, Flag: model.PRIVATE},
 		{Key: conf.PrivacyRegs, Value: `(?:(?:\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])