diff --git a/package.json b/package.json
index 15c84d0531c..f6c02a2b3c1 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "underscore": "~1.8.3",
     "express": "~4.13.3",
     "mustache": "~2.1.3",
-    "socket.io": "~1.3.7"
+    "socket.io": "~2.5.0"
   },
   "devDependencies": {
     "grunt-contrib-qunit": "~0.7.0",