diff --git a/docker/nginx/default.conf b/docker/nginx/default.conf
index 7c4ccbb..6ec1eb1 100644
--- a/docker/nginx/default.conf
+++ b/docker/nginx/default.conf
@@ -11,7 +11,9 @@ server {
 
     # Proxy API requests
     location /api/ {
-        proxy_pass http://vortex_app:3001; 
+        resolver 127.0.0.11 valid=30s;
+        set $backend_server server;
+        proxy_pass http://$backend_server:3001; 
         proxy_http_version 1.1;
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection 'upgrade';
@@ -24,7 +26,9 @@ server {
 
     # Proxy Socket.io
     location /socket.io/ {
-        proxy_pass http://vortex_app:3001;
+        resolver 127.0.0.11 valid=30s;
+        set $backend_server server;
+        proxy_pass http://$backend_server:3001;
         proxy_http_version 1.1;
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection "Upgrade";
@@ -35,7 +39,9 @@ server {
 
     # Static uploads
     location /uploads/ {
-        proxy_pass http://vortex_app:3001;
+        resolver 127.0.0.11 valid=30s;
+        set $backend_server server;
+        proxy_pass http://$backend_server:3001;
         proxy_set_header Host $host;
     }
 }