diff --git a/data/conf/nginx/site.conf b/data/conf/nginx/site.conf
index ccf4ab7c..e0f17a35 100644
--- a/data/conf/nginx/site.conf
+++ b/data/conf/nginx/site.conf
@@ -1,4 +1,14 @@
 proxy_cache_path /tmp levels=1:2 keys_zone=sogo:10m inactive=24h  max_size=1g;
+
+upstream portainer {
+  server portainer-mailcow:9000;
+}
+
+map $http_upgrade $connection_upgrade {
+  default upgrade;
+  '' close;
+}
+
 server {
   include /etc/nginx/conf.d/listen.active;
   include /etc/nginx/mime.types;