diff --git a/package.json b/package.json
index 399cbad..c716892 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "express": "4.16.0",
     "ejs": "*",
     "less-middleware": "~2.0.0",
-    "socket.io": "1.0.1",
+    "socket.io": "2.4.0",
     "express-uglify": "*",
     "lodash": "~4.17.5",
     "btoa": "~1.1.0",