diff --git a/examples/custom-parsers/package.json b/examples/custom-parsers/package.json
index be724174f3..d2108b5240 100644
--- a/examples/custom-parsers/package.json
+++ b/examples/custom-parsers/package.json
@@ -16,6 +16,6 @@
     "socket.io-client": "socketio/socket.io-client",
     "socket.io-json-parser": "^1.0.0",
     "socket.io-msgpack-parser": "^1.0.0",
-    "webpack": "^2.4.1"
+    "webpack": "^4.0.0"
   }
 }