diff --git a/src/main/resources/creativescala/templates/default.template.html b/src/main/resources/creativescala/templates/default.template.html
index 9bc2b8d..9373da9 100644
--- a/src/main/resources/creativescala/templates/default.template.html
+++ b/src/main/resources/creativescala/templates/default.template.html
@@ -13,7 +13,7 @@
     @:for(laika.site.metadata.description)
     <meta name="description" content="${_}" />
     @:@
-    <script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+    <script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?version=4.8.0&features=es6"></script>
     <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
     <link href="https://fonts.googleapis.com/css?family=Source+Code+Pro:400|Source+Sans+Pro:300,400,600"
         rel="stylesheet" type="text/css">