diff --git a/metadata/service/server/single.yml b/metadata/service/server/single.yml
index 5434790..2cf1984 100644
--- a/metadata/service/server/single.yml
+++ b/metadata/service/server/single.yml
@@ -1,5 +1,7 @@
 applications:
 - postgresql
+classes:
+- service.postgresql.support
 parameters:
   postgresql:
     server: