diff --git a/config-ui/nginx.conf b/config-ui/nginx.conf
index c6e5e7b9522..c9987f661b5 100644
--- a/config-ui/nginx.conf
+++ b/config-ui/nginx.conf
@@ -1,5 +1,6 @@
 server {
   listen 4000;
+  listen [::]:4000;
   server_name localhost;
   absolute_redirect off;
   client_max_body_size 20m;