diff --git a/group_vars/matrix_servers b/group_vars/matrix_servers
index 189fd4f4..c4885b2a 100755
--- a/group_vars/matrix_servers
+++ b/group_vars/matrix_servers
@@ -2549,6 +2549,7 @@ matrix_ssl_pre_obtaining_required_service_name: "{{ 'matrix-dynamic-dns' if matr
 matrix_nginx_proxy_access_log_syslog_integration_enabled: "{{ matrix_prometheus_nginxlog_exporter_enabled }}"
 matrix_prometheus_nginxlog_exporter_container_hostname: 'matrix-prometheus-nginxlog-exporter'
 matrix_prometheus_nginxlog_exporter_container_syslog_port: '6514'
+matrix_prometheus_nginxlog_exporter_container_metrics_port: '4040'
 matrix_nginx_proxy_access_log_syslog_integration_server_port: "{{ (matrix_prometheus_nginxlog_exporter_container_hostname | string +':'+ matrix_prometheus_nginxlog_exporter_container_syslog_port | string) | default('') }}"
 
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