diff --git a/helper-scripts/nextcloud.sh b/helper-scripts/nextcloud.sh
index 730e6124..5c703837 100755
--- a/helper-scripts/nextcloud.sh
+++ b/helper-scripts/nextcloud.sh
@@ -106,6 +106,10 @@ elif [[ ${NC_UPDATE} == "y" ]]; then
     exit 1
   else
     docker exec -it -u www-data $(docker ps -f name=php-fpm-mailcow -q) bash -c "php /web/nextcloud/updater/updater.phar"
+    NC_SUBD=$(docker exec -i -u www-data $(docker ps -f name=php-fpm-mailcow -q) /web/nextcloud/occ config:system:get overwritehost)
+    mv ./data/conf/nginx/nextcloud.conf ./data/conf/nginx/nextcloud.conf-$(date +%s).bak
+    cp ./data/assets/nextcloud/nextcloud.conf ./data/conf/nginx/
+    sed -i "s/NC_SUBD/${NC_SUBD}/g" ./data/conf/nginx/nextcloud.conf
   fi
 
 elif [[ ${NC_INSTALL} == "y" ]]; then