diff --git a/lib/6to5/polyfill.js b/lib/6to5/polyfill.js
index 84971c3dea..221aa97a57 100644
--- a/lib/6to5/polyfill.js
+++ b/lib/6to5/polyfill.js
@@ -1,3 +1,3 @@
 require("es6-symbol/implement");
 require("es6-shim");
-require("regenerator").runtime();
+require("regenerator/runtime");