diff --git a/package.json b/package.json
index 7dee2b4..d608220 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "mocha": "^3.5.0",
     "mocha-lazy-bdd": "^0.1.2",
     "power-assert": "^1.4.4",
-    "webpack": "^3.5.6"
+    "webpack": "^4.42.1"
   },
   "scripts": {
     "test": "mocha && karma start --single-run",