diff --git a/package.json b/package.json
index 71d21ef..637d804 100644
--- a/package.json
+++ b/package.json
@@ -57,7 +57,7 @@
     "webpack": "1.13.3",
     "webpack-dev-middleware": "1.8.4",
     "webpack-hot-middleware": "2.13.1",
-    "webpack-merge": "2.1.1"
+    "webpack-merge": "4.1.1"
   },
   "peerDependencies": {
     "react": ">=0.14.0",