diff --git a/package.json b/package.json
index 29ce856..51ebede 100644
--- a/package.json
+++ b/package.json
@@ -28,6 +28,6 @@
     "pm2": "3.2.4",
     "redis": "2.8.0",
     "sinon": "7.2.2",
-    "socket.io": "2.2.0"
+    "socket.io": "4.0.0"
   }
 }