diff --git a/backend/config/settings.py b/backend/config/settings.py
index 13f75bd..afa75a4 100644
--- a/backend/config/settings.py
+++ b/backend/config/settings.py
@@ -72,6 +72,8 @@ CORS_ALLOW_ALL_ORIGINS = True
 CSRF_TRUSTED_ORIGINS = [
     "https://market.quant-speed.com",
     "http://market.quant-speed.com",
+    "https://contest.quant-speed.com",
+    "http://contest.quant-speed.com",
     "http://localhost:8000",
 ]
 
diff --git a/frontend/vite.config.js b/frontend/vite.config.js
index 7dad3a4..3ec125f 100644
--- a/frontend/vite.config.js
+++ b/frontend/vite.config.js
@@ -34,6 +34,7 @@ export default defineConfig({
   preview: {
     host: '0.0.0.0',
     port: 8890,
+    allowedHosts: ['contest.quant-speed.com'],
     proxy: {
       '/api': {
         target: 'http://cywl-scoring-backend:8876',