diff --git a/index.js b/index.js
index 6be367a..73d09df 100644
--- a/index.js
+++ b/index.js
@@ -1,9 +1,20 @@
 const express = require("express");
 const app = express();
 const http = require("http").Server(app);
-const io = require("socket.io")(http);
+const { createServer } = require("http");
+const { Server } = require("socket.io");
 const port = 8081;
 
+const httpServer = createServer();
+const io = new Server(httpServer, {
+  cors: {
+    origin: "https://codefirst.iut.uca.fr/containers/vincentastolfi-maettleship",
+    // or with an array of origins
+    // origin: ["https://my-frontend.com", "https://my-other-frontend.com", "http://localhost:3000"],
+    credentials: true
+  }
+});
+
 app.use(express.static("public"));
 
 http.listen(port, () => {