diff --git a/src/_layouts/default.html b/src/_layouts/default.html
index 7ed46359ea..6b9d3b6b29 100644
--- a/src/_layouts/default.html
+++ b/src/_layouts/default.html
@@ -3,9 +3,9 @@
 <head>
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
-  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
+  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
   <link href="/assets/css/style.css" rel="stylesheet">
-  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.15.10/styles/monokai.min.css">
+  <link rel="stylesheet" href="//cdn.jsdelivr.net/gh/highlightjs/cdn-release@9.18.0/build/styles/monokai.min.css">
   <link rel="apple-touch-icon" href="icon.png">
   <meta name="theme-color" content="#fafafa">
   <link href="https://fonts.googleapis.com/css?family=Asap" rel="stylesheet">
@@ -58,9 +58,9 @@
     </div>
   </div>
 
-  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
-  <script src="https://cdnjs.cloudflare.com/ajax/libs/anchor-js/4.2.0/anchor.min.js"></script>
-  <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.15.10/highlight.min.js"></script>
+  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/anchor-js/4.2.2/anchor.min.js"></script>
+  <script src="//cdn.jsdelivr.net/gh/highlightjs/cdn-release@9.18.0/build/highlight.min.js"></script>
   <script src="/assets/js/app.js"></script>
 </body>
 </html>
