diff --git a/callback-server/app.js b/callback-server/app.js
index 63f5be6..249862f 100644
--- a/callback-server/app.js
+++ b/callback-server/app.js
@@ -2,6 +2,7 @@
 const express = require('express')
 const axios = require('axios');
 const mariadb = require('mariadb');
+const cors = require('cors');
 //#endregion
 
 //#region CONSTANTS
@@ -9,6 +10,7 @@ const port = 80
 const clientId = process.env.CLIENT_ID;
 const clientSecret = process.env.CLIENT_SECRET;
 const redirectUri = 'https://felixmielcarek.github.io/callback/';
+const allowedDomain = [ 'https://felixmielcarek.github.io' ];
 //#endregion
 
 //#region LOGS
@@ -20,6 +22,7 @@ function stepBeggining(step) {
 
 //#region APP INIT
 const app = express()
+app.use(cors({ origin: allowedDomain }));
 app.listen(port, () => { console.log(`Big brother is listening on port ${port}`) })
 //#endregion
 
diff --git a/callback-server/package-lock.json b/callback-server/package-lock.json
index 9ca42cf..b528f67 100644
--- a/callback-server/package-lock.json
+++ b/callback-server/package-lock.json
@@ -10,6 +10,7 @@
       "license": "MIT",
       "dependencies": {
         "axios": "^1.6.7",
+        "cors": "^2.8.5",
         "express": "^4.18.3",
         "mariadb": "^3.3.0"
       }
@@ -151,6 +152,18 @@
       "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
       "integrity": "sha512-QADzlaHc8icV8I7vbaJXJwod9HWYp8uCqf1xa4OfNu1T7JVxQIrUgOWtHdNDtPiywmFbiS12VjotIXLrKM3orQ=="
     },
+    "node_modules/cors": {
+      "version": "2.8.5",
+      "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
+      "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
+      "dependencies": {
+        "object-assign": "^4",
+        "vary": "^1"
+      },
+      "engines": {
+        "node": ">= 0.10"
+      }
+    },
     "node_modules/debug": {
       "version": "2.6.9",
       "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
@@ -577,6 +590,14 @@
         "node": ">= 0.6"
       }
     },
+    "node_modules/object-assign": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
+      "integrity": "sha512-rJgTQnkUnH1sFw8yT6VSU3zD3sWmu6sZhIseY8VX+GRu3P6F7Fu+JNDoXfklElbLJSnc3FUQHVe4cU5hj+BcUg==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/object-inspect": {
       "version": "1.13.1",
       "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.13.1.tgz",
diff --git a/callback-server/package.json b/callback-server/package.json
index 1213f60..e6a0fce 100644
--- a/callback-server/package.json
+++ b/callback-server/package.json
@@ -11,6 +11,7 @@
   "license": "MIT",
   "dependencies": {
     "axios": "^1.6.7",
+    "cors": "^2.8.5",
     "express": "^4.18.3",
     "mariadb": "^3.3.0"
   }