diff --git a/site/index.html b/site/index.html
index 68e787a33..9dbfd1214 100644
--- a/site/index.html
+++ b/site/index.html
@@ -300,7 +300,7 @@
 
 		<script
 			crossorigin="anonymous"
-			src="/polyfill.io/v3/polyfill.min.js?features=ResizeObserver"
+			src="/polyfill.io/v3/polyfill.min.js?features=ResizeObserver%2CIntl.Locale"
 		></script>
 
 		<% for (var chunk in htmlWebpackPlugin.files.chunks) { %>