diff --git a/calibre/rootfs/etc/nginx/includes/upstream.conf b/calibre/rootfs/etc/nginx/includes/upstream.conf
index b292326bd..4c8503e5c 100644
--- a/calibre/rootfs/etc/nginx/includes/upstream.conf
+++ b/calibre/rootfs/etc/nginx/includes/upstream.conf
@@ -1,3 +1,3 @@
 upstream backend {
-    server 127.0.0.1:8080;
+    server 127.0.0.1:8181;
 }