diff --git a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/cluster-wide-apps/app-of-other-apps/prometheus-operator.yaml b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/cluster-wide-apps/app-of-other-apps/prometheus-operator.yaml
index 4ad5d0512..8f9aa23d8 100644
--- a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/cluster-wide-apps/app-of-other-apps/prometheus-operator.yaml
+++ b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/cluster-wide-apps/app-of-other-apps/prometheus-operator.yaml
@@ -8,7 +8,7 @@ spec:
   source:
     repoURL: https://github.com/prometheus-community/helm-charts.git
     path: charts/kube-prometheus-stack/charts/crds/
-    targetRevision: kube-prometheus-stack-55.0.0
+    targetRevision: kube-prometheus-stack-56.0.0
     directory:
       recurse: true
   destination: