diff --git a/index.html b/index.html
index 3e0e64e..bd2bc91 100644
--- a/index.html
+++ b/index.html
@@ -29,7 +29,7 @@
 
   <link rel="stylesheet" id="theme-style" defer
     href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/11.5.1/styles/github-dark.min.css">
-  <script defer src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/11.7.0/highlight.min.js"></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/11.7.0/highlight.min.js"></script>
 
   <link rel="stylesheet" href="styles.css">
 </head>