diff --git a/conf/nginx.conf b/conf/nginx.conf
index 99f8a79..5614de6 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -95,7 +95,7 @@ location ^~ /block/ {
     proxy_hide_header 'Access-Control-Allow-Origin';
     proxy_hide_header 'Permissions-Policy';
     proxy_hide_header 'X-XSS-Protection';
-    proxy_pass http://127.0.0.1:3000;
+    proxy_pass http://127.0.0.1:__PORT__;
 }
 location ~ ^/(register|login|recovery|settings|user|pad|drive|poll|slide|code|whiteboard|file|media|profile|contacts|todo|filepicker|debug|kanban|sheet|support|admin|notifications|teams|calendar|presentation|doc|form|report|convert|checkup|diagram)$ {
     rewrite ^(.*)$ $1/ redirect;