diff --git a/metadata/service/server/single.yml b/metadata/service/server/single.yml
index acf3d52..5df713d 100644
--- a/metadata/service/server/single.yml
+++ b/metadata/service/server/single.yml
@@ -7,6 +7,7 @@ parameters:
       database:
         engine: postgresql
         host: 127.0.0.1
+        port: 5432
         name: grafana
         password: ${_param:postgresql_grafana_password}
         user: grafana
\ No newline at end of file