diff --git a/packages/rath-client/public/404.html b/packages/rath-client/public/404.html
index 2ff6ce9f..372714cf 100644
--- a/packages/rath-client/public/404.html
+++ b/packages/rath-client/public/404.html
@@ -64,7 +64,7 @@ <h1 class="title">404! It seems you lost yourself.</h1>
       <p>\[ e^{i\pi} + 1 = 0 \]</p>
     </div>
   </div>
-  <script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+  <script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
   <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
-</html>
\ No newline at end of file
+</html>