diff --git a/docs/_releasenotes/2159.change.etcdbackup-updated-to-0.20250904.0 b/docs/_releasenotes/2159.change.etcdbackup-updated-to-0.20250904.0
new file mode 100644
index 0000000000000000000000000000000000000000..bd3a5fd8236fc224ce5f7789f160807ff0c2fda0
--- /dev/null
+++ b/docs/_releasenotes/2159.change.etcdbackup-updated-to-0.20250904.0
@@ -0,0 +1 @@
+Updated default version of helm chart etcdbackup of  from 0.20250724.0 to 0.20250904.0
diff --git a/docs/user/reference/options/yk8s.k8s-service-layer.etcd-backup.rst b/docs/user/reference/options/yk8s.k8s-service-layer.etcd-backup.rst
index 9385612221f958976e3dd5e9e48e3b5d66b490a1..758dfc14f5a3797c7b986b73e266603e105dfafe 100644
--- a/docs/user/reference/options/yk8s.k8s-service-layer.etcd-backup.rst
+++ b/docs/user/reference/options/yk8s.k8s-service-layer.etcd-backup.rst
@@ -189,7 +189,7 @@ If the version shall be unpinned, set to: ``null``.
 
 **Default:**::
 
-  "0.20250724.0"
+  "0.20250904.0"
 
 
 **Example:**::
diff --git a/nix/yk8s/k8s-supplements/etcd-backup.nix b/nix/yk8s/k8s-supplements/etcd-backup.nix
index 9baf4cc77e132fe37d18384cd3cf8cc77373bf99..93f371378846c966aa985510bf2bcb31b830fd19 100644
--- a/nix/yk8s/k8s-supplements/etcd-backup.nix
+++ b/nix/yk8s/k8s-supplements/etcd-backup.nix
@@ -147,7 +147,7 @@ in {
       defaultRepoUrl = "https://charts.yaook.cloud/operator/stable/";
       defaultChartRef = "etcdbackup";
       # renovate: datasource=helm depName=etcdbackup registryUrl=https://charts.yaook.cloud/operator/stable/
-      defaultChartVersion = "0.20250724.0";
+      defaultChartVersion = "0.20250904.0";
       defaultReleaseNamespace = "kube-system";
       defaultReleaseName = "etcd-backup";
       valuesDocUrl = "https://gitlab.com/yaook/operator/-/blob/devel/yaook/helm_builder/Charts/etcdbackup/values-template.yaml.j2";