diff --git a/postgres/extended.conf b/postgres/extended.conf
index 8eda4f4..57acf56 100644
--- a/postgres/extended.conf
+++ b/postgres/extended.conf
@@ -1,5 +1,5 @@
-# extended.conf
-
-wal_level = logical
-max_wal_senders = 20
-max_replication_slots = 20
+primary:
+  extendedConfiguration: |
+    wal_level=logical
+    max_wal_senders=20
+    max_replication_slots=20