diff --git a/package.json b/package.json
index 82f0a6ae8084be82b6157dbf83aa8dde7b562f3d..73c11e986a7b4d67ccb3775c02aad7e643b1b741 100644
--- a/package.json
+++ b/package.json
@@ -20,6 +20,7 @@
     "babel-core": "^6.26.0",
     "babel-loader": "^7.1.2",
     "babel-preset-es2015": "^6.24.1",
+    "babel-preset-stage-2": "^6.24.1",
     "compression-webpack-plugin": "^1.0.1",
     "file-loader": "^1.1.5",
     "mithril": "^1.1.5",