diff --git a/docs/_releasenotes/x.change.etcdbackup-updated-to-0.20251211.0 b/docs/_releasenotes/x.change.etcdbackup-updated-to-0.20251211.0
new file mode 100644
index 0000000000000000000000000000000000000000..fc3e7e6b17a47e664c29a7beef07f0394d76dc5e
--- /dev/null
+++ b/docs/_releasenotes/x.change.etcdbackup-updated-to-0.20251211.0
@@ -0,0 +1 @@
+Updated default version of helm chart etcdbackup from 0.20251127.0 to 0.20251211.0
diff --git a/nix/yk8s/k8s-supplements/etcd-backup.nix b/nix/yk8s/k8s-supplements/etcd-backup.nix
index 04d0feb2ab5ec5a5fd886fbe8e39ec6d4e4a57ee..20e60a95ca0a0deadd7c288cec40ef89b78df60c 100644
--- a/nix/yk8s/k8s-supplements/etcd-backup.nix
+++ b/nix/yk8s/k8s-supplements/etcd-backup.nix
@@ -138,7 +138,7 @@ in {
       defaultRepoUrl = "https://charts.yaook.cloud/operator/stable/";
       defaultChartRef = "etcdbackup";
       # renovate: datasource=helm depName=etcdbackup registryUrl=https://charts.yaook.cloud/operator/stable/
-      defaultChartVersion = "0.20251127.0";
+      defaultChartVersion = "0.20251211.0";
       defaultReleaseNamespace = "kube-system";
       defaultReleaseName = "etcd-backup";
       valuesDocUrl = "https://gitlab.com/yaook/operator/-/blob/devel/yaook/helm_builder/Charts/etcdbackup/values-template.yaml.j2";