diff --git a/examples/custom-parsers/package.json b/examples/custom-parsers/package.json
index 3953623d83..0aa8d68749 100644
--- a/examples/custom-parsers/package.json
+++ b/examples/custom-parsers/package.json
@@ -16,6 +16,6 @@
     "socket.io-client": "^4.0.0",
     "socket.io-json-parser": "^3.0.0",
     "socket.io-msgpack-parser": "^3.0.1",
-    "webpack": "^2.4.1"
+    "webpack": "^4.0.0"
   }
 }