diff --git a/package.json b/package.json
index e57ff502..d1df981a 100644
--- a/package.json
+++ b/package.json
@@ -67,7 +67,7 @@
     "webpack-bundle-analyzer": "^2.2.1",
     "webpack-dev-middleware": "^1.10.0",
     "webpack-hot-middleware": "^2.16.1",
-    "webpack-merge": "^2.6.1",
+    "webpack-merge": "^5.8.0",
     "chai": "^3.5.0",
     "chromedriver": "^2.27.2",
     "cross-env": "^3.1.4",