diff --git a/docs/index.html b/docs/index.html
index d538ec8628..20eb08b324 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -163,5 +163,6 @@
     <script src="//cdn.jsdelivr.net/npm/docsify/lib/docsify.min.js"></script>
     <script src="//cdn.jsdelivr.net/npm/docsify/lib/plugins/search.min.js"></script>
     <script src="//cdn.jsdelivr.net/npm/docsify/lib/plugins/ga.min.js"></script>
+    <script src="//cdn.jsdelivr.net/npm/prismjs@1/components/prism-coffeescript.min.js"></script>
   </body>
 </html>