diff --git a/package.json b/package.json
index 214bbe354ec..a31abd8eb1e 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "underscore": "~1.5.1",
     "express": "~2.5.9",
     "mustache": "~0.7.2",
-    "socket.io": "~0.9.13"
+    "socket.io": "~2.4.0"
   },
   "devDependencies": {
     "grunt-contrib-qunit": "~0.2.2",