diff --git a/shared/polyfills.js b/shared/polyfills.js
index 7d972d9..0c186f4 100644
--- a/shared/polyfills.js
+++ b/shared/polyfills.js
@@ -1,2 +1,3 @@
 //=require element-closest/element-closest.js
+//=require promise-polyfill/dist/polyfill.js
 //=require whatwg-fetch/dist/fetch.umd.js