diff --git a/index.js b/index.js
index cc520cc..4b44712 100644
--- a/index.js
+++ b/index.js
@@ -1,8 +1,12 @@
-import { Hocuspocus } from "@hocuspocus/server";
+import { Server } from "@hocuspocus/server";
 
-const server = new Hocuspocus({
-    async onConnect({ connection }) {
-        connection.requiresAuthentication = false;
+const server = Server.configure({
+    async onAuthenticate(data) {
+        const { token } = data;
+
+        if (token !== "hocuspocus-token") {
+            throw new Error("Not authorized!");
+        }
     },
     port: 4242,
 });