diff --git a/kubernetes/monitoring/prometheus/app/helm.yaml b/kubernetes/monitoring/prometheus/app/helm.yaml
index 83359f6c..534f92b9 100644
--- a/kubernetes/monitoring/prometheus/app/helm.yaml
+++ b/kubernetes/monitoring/prometheus/app/helm.yaml
@@ -9,7 +9,7 @@ spec:
   source:
     chart: kube-prometheus-stack
     repoURL: https://prometheus-community.github.io/helm-charts
-    targetRevision: 87.16.1
+    targetRevision: 87.21.0
     helm:
       releaseName: prometheus-operator
       valuesObject: