diff --git a/manifests/database.yaml b/manifests/database.yaml
index a7f29fa..6451520 100644
--- a/manifests/database.yaml
+++ b/manifests/database.yaml
@@ -27,6 +27,7 @@ spec:
       - host all all all md5
 
   backup:
+    retentionPolicy: "30d"
     barmanObjectStore:
       destinationPath: "s3://halis/cloudnativepg"
       endpointURL: https://s3.halia.dev