diff --git a/volumes/conf.d/ha.zinomedia.de.conf b/volumes/conf.d/ha.zinomedia.de.conf
index 4f19eff..e1682f3 100644
--- a/volumes/conf.d/ha.zinomedia.de.conf
+++ b/volumes/conf.d/ha.zinomedia.de.conf
@@ -17,6 +17,8 @@ server {
         proxy_set_header X-Forwarded-Proto $scheme;
         proxy_set_header X-Frame-Options SAMEORIGIN;
         proxy_set_header X-Content-Type-Options nosniff;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
         proxy_connect_timeout 15s;
         proxy_read_timeout 30s;
         proxy_send_timeout 30s;