diff --git a/package.json b/package.json
index 8ade80997a..796de3eb9a 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "chalk": "^0.5.1",
     "chokidar": "0.12.6",
     "commander": "2.6.0",
-    "core-js": "^0.4.9",
+    "core-js": "^0.5.2",
     "debug": "^2.1.1",
     "detect-indent": "3.0.0",
     "estraverse": "1.9.1",