diff --git a/package.json b/package.json
index fe7ee727..94bc85c5 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   , "main": "./lib/engine.io-client"
   , "version": "0.1.0"
   , "dependencies": {
-        "ws": "0.3.8"
+        "ws": "0.4.0"
       , "xmlhttprequest": "1.3.0"
     }
   , "devDependencies": {