diff --git a/package.json b/package.json
index 3135f3531ae..ad0c80382f3 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "express": "~4.13.3",
     "grunt-cli": "~0.1.13",
     "mustache": "~2.2.1",
-    "socket.io": "~1.3.7"
+    "socket.io": "~2.4.0"
   },
   "devDependencies": {
     "grunt": "~0.4.5",