diff --git a/src/projects/markdown-previewer/index.html b/src/projects/markdown-previewer/index.html
index 25230294..0b7206b7 100644
--- a/src/projects/markdown-previewer/index.html
+++ b/src/projects/markdown-previewer/index.html
@@ -4,7 +4,7 @@
 />
 <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/9000.0.1/themes/prism.min.css"
 />
 
 <div id="app"></div>
@@ -18,4 +18,4 @@
   src="https://unpkg.com/react-dom@17/umd/react-dom.production.min.js"
 ></script>
 <script src="https://cdnjs.cloudflare.com/ajax/libs/marked/2.0.5/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/9000.0.1/prism.min.js"></script>