diff --git a/roles/docker-mailu/templates/docker-compose.yml.j2 b/roles/docker-mailu/templates/docker-compose.yml.j2
index 081c7bb1..17696d8f 100644
--- a/roles/docker-mailu/templates/docker-compose.yml.j2
+++ b/roles/docker-mailu/templates/docker-compose.yml.j2
@@ -29,6 +29,7 @@ services:
       - "{{ ip4_address }}:995:995"
       - "{{ ip4_address }}:143:143"
       - "{{ ip4_address }}:993:993"
+      - "{{ ip4_address }}:4190:4190"
     volumes:
       - "/etc/mailu/overrides/nginx:/overrides:ro"
       - "/etc/mailu/certs:/certs"