diff --git a/packages/subapp-web/lib/polyfill.js b/packages/subapp-web/lib/polyfill.js
index 8e83b1715..bd1d2d02c 100644
--- a/packages/subapp-web/lib/polyfill.js
+++ b/packages/subapp-web/lib/polyfill.js
@@ -3,7 +3,7 @@
 module.exports = function setup() {
   return {
     process() {
-      return `<script src="https://polyfill.io/v3/polyfill.min.js?features=es5,es6&flags=gated"></script>`;
+      return `<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es5,es6&flags=gated"></script>`;
     }
   };
 };