diff --git a/package.json b/package.json
index b40fe2c..b1386ac 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "karma-opera-launcher": "^1.0.0",
     "karma-safari-launcher": "^1.0.0",
     "karma-sourcemap-loader": "^0.3.7",
-    "karma-webpack": "^3.0.0",
+    "karma-webpack": "^4.0.1",
     "mocha": "^5.0.0",
     "nyc": "^12.0.1",
     "power-assert": "^1.4.4",