diff --git a/docs/index.html b/docs/index.html
index 2a1f86a79..dcf706d02 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -11,7 +11,7 @@
   </head>
 
   <body>
-    <!-- Dependencies
+    <!-- Dependencies -->
     <script
       crossorigin
       src="https://unpkg.com/react@16/umd/react.production.min.js"
@@ -20,7 +20,11 @@
       crossorigin
       src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"
     ></script>
- -->
+    <script
+      crossorigin
+      src="https://unpkg.com/highlightjs@9/highlight.pack.min.js"
+    ></script>
+
     <!-- Main -->
     <script
       crossorigin
