diff --git a/kubernetes/talos-flux/apps/observability/kube-prometheus-stack/app/helm-release.yaml b/kubernetes/talos-flux/apps/observability/kube-prometheus-stack/app/helm-release.yaml
index 4d9c013af..9ac4078ce 100644
--- a/kubernetes/talos-flux/apps/observability/kube-prometheus-stack/app/helm-release.yaml
+++ b/kubernetes/talos-flux/apps/observability/kube-prometheus-stack/app/helm-release.yaml
@@ -11,7 +11,7 @@ spec:
   chart:
     spec:
       chart: kube-prometheus-stack
-      version: 66.3.1
+      version: 66.4.0
       sourceRef:
         kind: HelmRepository
         name: prometheus-community-charts