diff --git a/package.json b/package.json
index c3abcea..459a91c 100644
--- a/package.json
+++ b/package.json
@@ -155,7 +155,7 @@
   },
   "devDependencies": {
     "babel-plugin-transform-es2015-modules-systemjs": "^6.6.5",
-    "babel-preset-es2015": "^6.6.0",
+    "babel-preset-es2015": "^6.24.1",
     "chai": "^3.2.0",
     "connect-pushstate": "^1.0.0",
     "del": "^2.0.2",