diff --git a/src/main/java/run/halo/search/widget/SearchWidgetHeadProcessor.java b/src/main/java/run/halo/search/widget/SearchWidgetHeadProcessor.java
index 2c2e36b..0007623 100644
--- a/src/main/java/run/halo/search/widget/SearchWidgetHeadProcessor.java
+++ b/src/main/java/run/halo/search/widget/SearchWidgetHeadProcessor.java
@@ -35,7 +35,7 @@ private String searchWidgetScript() {
 
         return PROPERTY_PLACEHOLDER_HELPER.replacePlaceholders("""
             <!-- PluginSearchWidget start -->
-            <script src="/plugins/PluginSearchWidget/assets/static/search-widget.iife.js?version=${version}" async></script>
+            <script src="/plugins/PluginSearchWidget/assets/static/search-widget.iife.js?version=${version}" defer></script>
             <link rel="stylesheet" href="/plugins/PluginSearchWidget/assets/static/style.css?version=${version}" />
             <!-- PluginSearchWidget end -->
             """, properties);