diff --git a/index.html b/index.html
index b3fe9e8..6cbbe2e 100644
--- a/index.html
+++ b/index.html
@@ -9,8 +9,8 @@
   <meta name="description" content="互联网 Java 工程师进阶知识完全扫盲，项目维护者：杨立滨">
   <meta name="viewport"
     content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
-  <link rel="stylesheet" href="//unpkg.com/docsify/lib/themes/vue.css">
-  <link rel="stylesheet" href="//unpkg.com/docsify-dark-mode@0.6.1/dist/style.css" />
+  <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/docsify/lib/themes/vue.css">
+  <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/docsify-dark-mode@0.6.1/dist/style.css" />
   <link rel="icon" type="image/png" sizes="32x32" href="images/favicon-32x32.png">
   <link rel="icon" type="image/png" sizes="16x16" href="images/favicon-16x16.png">
 </head>
@@ -131,19 +131,19 @@
       ]
     }
   </script>
-  <script src="//unpkg.com/docsify/lib/docsify.min.js"></script>
-  <script src="//unpkg.com/prismjs/components/prism-c.min.js"></script>
-  <script src="//unpkg.com/prismjs/components/prism-bash.min.js"></script>
-  <script src="//unpkg.com/prismjs/components/prism-cpp.min.js"></script>
-  <script src="//unpkg.com/prismjs/components/prism-json.min.js"></script>
-  <script src="//unpkg.com/prismjs/components/prism-java.min.js"></script>
-  <script src="//unpkg.com/prismjs/components/prism-python.min.js"></script>
-  <script src="//unpkg.com/docsify-copy-code"></script>
-  <script src="//unpkg.com/docsify/lib/plugins/search.js"></script>
-  <script src="//unpkg.com/docsify/lib/plugins/emoji.js"></script>
-  <script src="//unpkg.com/docsify/lib/plugins/zoom-image.js"></script>
-  <script src="//unpkg.com/docsify-dark-mode@0.6.1/dist/index.js"></script>
-  <script src="//unpkg.com/docsify-pagination/dist/docsify-pagination.min.js"></script>
+  <script src="//cdn.jsdelivr.net/npm/docsify/lib/docsify.min.js"></script>
+  <script src="//cdn.jsdelivr.net/npm/prismjs/components/prism-c.min.js"></script>
+  <script src="//cdn.jsdelivr.net/npm/prismjs/components/prism-bash.min.js"></script>
+  <script src="//cdn.jsdelivr.net/npm/prismjs/components/prism-cpp.min.js"></script>
+  <script src="//cdn.jsdelivr.net/npm/prismjs/components/prism-json.min.js"></script>
+  <script src="//cdn.jsdelivr.net/npm/prismjs/components/prism-java.min.js"></script>
+  <script src="//cdn.jsdelivr.net/npm/prismjs/components/prism-python.min.js"></script>
+  <script src="//cdn.jsdelivr.net/npm/docsify-copy-code"></script>
+  <script src="//cdn.jsdelivr.net/npm/docsify/lib/plugins/search.js"></script>
+  <script src="//cdn.jsdelivr.net/npm/docsify/lib/plugins/emoji.js"></script>
+  <script src="//cdn.jsdelivr.net/npm/docsify/lib/plugins/zoom-image.js"></script>
+  <script src="//cdn.jsdelivr.net/npm/docsify-dark-mode@0.6.1/dist/index.js"></script>
+  <script src="//cdn.jsdelivr.net/npm/docsify-pagination/dist/docsify-pagination.min.js"></script>
 </body>
 
 </html>
\ No newline at end of file