diff --git a/package.json b/package.json
index 6866af4..a6a2b52 100644
--- a/package.json
+++ b/package.json
@@ -35,6 +35,6 @@
     "jsdom": "^11.1.0",
     "sinon": "^4.0.0",
     "mocha": "^4.0.0",
-    "webpack": "^3.0.0"
+    "webpack": "^4.0.0"
   }
 }