diff --git a/package.json b/package.json
index acd4c22..6d25810 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
   "license": "ISC",
   "dependencies": {
     "express": "^4.16.3",
-    "socket.io": "^2.2.0",
+    "socket.io": "^4.0.0",
     "striptags": "^3.1.1"
   },
   "devDependencies": {