diff --git a/package.json b/package.json
index 9925a6c..7d6c90f 100644
--- a/package.json
+++ b/package.json
@@ -23,10 +23,7 @@
   "devDependencies": {
     "babel-core": "^6.24.1",
     "babel-loader": "^7.0.0",
-    "babel-plugin-transform-async-to-generator": "^6.24.1",
-    "babel-plugin-transform-es2015-arrow-functions": "^6.22.0",
     "babel-plugin-transform-react-jsx": "^6.24.1",
-    "babel-polyfill": "^6.23.0",
     "babili-webpack-plugin": "0.0.11",
     "electron": "~1.6.2",
     "electron-packager": "^8.6.0",