diff --git a/package.json b/package.json
index 3936f06482..1bc7fa6e67 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "chalk": "^0.5.1",
     "chokidar": "^0.12.6",
     "commander": "^2.6.0",
-    "core-js": "^0.5.4",
+    "core-js": "^0.6.0",
     "debug": "^2.1.1",
     "detect-indent": "^3.0.0",
     "estraverse": "^1.9.1",