diff --git a/templates/shinyproxy-docker-compose.yml.j2 b/templates/shinyproxy-docker-compose.yml.j2
index c3919ff..ca24e22 100644
--- a/templates/shinyproxy-docker-compose.yml.j2
+++ b/templates/shinyproxy-docker-compose.yml.j2
@@ -25,7 +25,7 @@ services:
     image: {{ shinyproxy_docker_image }}
 {% if shinyproxy_expose_prometheus and shinyproxy_version is version_compare('2.5.0', '>=') %}
     ports:
-      - {{ shinyproxy_prometheus_port }}:{{ shinyproxy_prometheus_port }}
+      - {{ shinyproxy_prometheus_port }}
 {% endif %}
 {% endif %}
     volumes: