diff --git a/infrastructure/addons/cnpg/postgres-cluster.yaml b/infrastructure/addons/cnpg/postgres-cluster.yaml
index 3c7e25c..c06d28f 100644
--- a/infrastructure/addons/cnpg/postgres-cluster.yaml
+++ b/infrastructure/addons/cnpg/postgres-cluster.yaml
@@ -42,6 +42,7 @@ spec:
       barmanObjectStore:
         destinationPath: "s3://HetznerTerra/rancher-backups/"
         endpointURL: "https://s3.us-east-005.backblazeb2.com"
+        serverName: rancher-db
         s3Credentials:
           accessKeyId:
             name: b2-credentials