diff --git a/apps/markdown-previewer/index.html b/apps/markdown-previewer/index.html
index 90c49be5..ca440342 100644
--- a/apps/markdown-previewer/index.html
+++ b/apps/markdown-previewer/index.html
@@ -8,7 +8,7 @@
     />
     <link
       rel="stylesheet"
-      href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.23.0/themes/prism.min.css"
+      href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/themes/prism.min.css"
     />
     <title>FCC: Simple React Markdown Previewer</title>
   </head>
@@ -23,7 +23,7 @@
       src="https://unpkg.com/react-dom@17/umd/react-dom.production.min.js"
     ></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/marked/2.0.3/marked.min.js"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.23.0/prism.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/prism.min.js"></script>
     <script src="bundle.js"></script>
   </body>
 </html>