diff --git a/manifests/databases/postgres-cluster.yaml b/manifests/databases/postgres-cluster.yaml
index a232b15..d1c0b6e 100644
--- a/manifests/databases/postgres-cluster.yaml
+++ b/manifests/databases/postgres-cluster.yaml
@@ -74,6 +74,7 @@ spec:
         key: password
     wal:
       compression: gzip
+  retentionPolicy: "30d"
 ---
 apiVersion: postgresql.cnpg.io/v1
 kind: ScheduledBackup
diff --git a/manifests/gitea/postgres.yaml b/manifests/gitea/postgres.yaml
index f96abcd..4d49431 100644
--- a/manifests/gitea/postgres.yaml
+++ b/manifests/gitea/postgres.yaml
@@ -70,6 +70,7 @@ spec:
         key: password
     wal:
       compression: gzip
+  retentionPolicy: "30d"
 ---
 apiVersion: postgresql.cnpg.io/v1
 kind: ScheduledBackup