diff --git a/metadata/service/region/single.yml b/metadata/service/region/single.yml
index 6700acc..54ac038 100644
--- a/metadata/service/region/single.yml
+++ b/metadata/service/region/single.yml
@@ -18,4 +18,5 @@
         name: maasdb
         password: password
         username: maas
+        port: 5432
       enabled: true