diff --git a/packages/regenerator-transform/package.json b/packages/regenerator-transform/package.json
index 0e9ae23ca..e8e008df2 100644
--- a/packages/regenerator-transform/package.json
+++ b/packages/regenerator-transform/package.json
@@ -20,7 +20,7 @@
   },
   "babel": {
     "presets": [
-      "es2015"
+      ["es2015", { "loose": true }]
     ],
     "plugins": [
       "transform-runtime"