diff --git a/lib/socket.js b/lib/socket.js
index 1dd11e2ec..df70a37b8 100644
--- a/lib/socket.js
+++ b/lib/socket.js
@@ -149,6 +149,12 @@
       var xhr = io.util.request();
 
       xhr.open('GET', url, true);
+      
+      if (this.options.cookie) {
+        xhr.setDisableHeaderCheck(true);
+        xhr.setRequestHeader('Cookie', this.options.cookie);
+      }
+
       if (this.isXDomain()) {
         xhr.withCredentials = true;
       }
diff --git a/package.json b/package.json
index 2c8a8991e..e7f5e4aad 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
   , "dependencies": {
         "uglify-js": "1.2.5"
       , "ws": "0.4.x"
-      , "xmlhttprequest": "1.4.2"
+      , "xmlhttprequest": "1.6.0"
       , "active-x-obfuscator": "0.0.1"
     }
   , "devDependencies": {