diff --git a/site/index.js b/site/index.js
index 572938ff6..1aa3622aa 100644
--- a/site/index.js
+++ b/site/index.js
@@ -1,3 +1,4 @@
+import 'babel-polyfill'
 import '../components/style.js'
 import './index.less'
 import 'highlight.js/styles/solarized-light.css'