diff --git a/source/index.html b/source/index.html
index 07b8714..b32da2d 100644
--- a/source/index.html
+++ b/source/index.html
@@ -11,17 +11,15 @@
     <meta name="author" content="shiy2008@gmail.com" />
 
     <link rel="manifest" href="index.webmanifest" />
-    <script src="https://cdn.jsdelivr.net/npm/pwacompat@2.0.17/pwacompat.min.js"></script>
+    <script src="https://polyfill.kaiyuanshe.cn/feature/PWAManifest.js"></script>
     <link
       rel="stylesheet"
-      href="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/css/bootstrap.min.css"
+      href="https://unpkg.com/bootstrap@4.6.2/dist/css/bootstrap.min.css"
     />
-    <script
-      crossorigin
-      src="https://polyfill.app/api/polyfill?features=es.string.match-all,es.array.flat,es.object.from-entries,regenerator-runtime"
-    ></script>
-    <script src="https://cdn.jsdelivr.net/npm/@webcomponents/webcomponentsjs@2.5.0/custom-elements-es5-adapter.js"></script>
-    <script src="https://cdn.jsdelivr.net/npm/@webcomponents/webcomponentsjs@2.5.0/webcomponents-bundle.min.js"></script>
+    <script src="https://polyfill.kaiyuanshe.cn/feature/ECMAScript.js"></script>
+    <script src="https://polyfill.kaiyuanshe.cn/feature/Regenerator.js"></script>
+    <script src="https://unpkg.com/@webcomponents/webcomponentsjs@2.7.0/custom-elements-es5-adapter.js"></script>
+    <script src="https://unpkg.com/@webcomponents/webcomponentsjs@2.7.0/webcomponents-bundle.js"></script>
 
     <script src="index.tsx" async></script>
   </head>