diff --git a/class/defaults.yml b/class/defaults.yml
index 7a7a8b2..5badd5e 100644
--- a/class/defaults.yml
+++ b/class/defaults.yml
@@ -123,6 +123,8 @@ parameters:
           enabled: true
           size: ${vault:storage:size}
           storageClass: ${vault:storage:class}
+          annotations:
+            k8up.io/backup: 'false'
         ingress:
           enabled: ${vault:ingress:enabled}
           annotations: ${vault:ingress:annotations}
diff --git a/tests/golden/defaults/vault/vault/10_vault/vault/templates/server-statefulset.yaml b/tests/golden/defaults/vault/vault/10_vault/vault/templates/server-statefulset.yaml
index c12465d..980b08d 100644
--- a/tests/golden/defaults/vault/vault/10_vault/vault/templates/server-statefulset.yaml
+++ b/tests/golden/defaults/vault/vault/10_vault/vault/templates/server-statefulset.yaml
@@ -168,6 +168,8 @@ spec:
     type: OnDelete
   volumeClaimTemplates:
     - metadata:
+        annotations:
+          k8up.io/backup: 'false'
         name: data
       spec:
         accessModes: