diff --git a/package.json b/package.json
index 99727a35865..349aad0a25b 100644
--- a/package.json
+++ b/package.json
@@ -46,10 +46,10 @@
     "recast": "git://github.com/kalcifer/recast.git#bug/allowbreak",
     "rx": "^4.1.0",
     "supports-color": "^3.1.2",
-    "webpack": "^2.2.0-rc.0",
+    "webpack": "^4.0.0",
     "webpack-addons": "0.0.20",
     "webpack-addons-ylvis": "0.0.32",
-    "yargs": "^6.5.0",
+    "yargs": "^13.1.0",
     "yeoman-environment": "^1.6.6",
     "yeoman-generator": "^1.1.1"
   },