diff --git a/CHANGELOG.md b/CHANGELOG.md
index d20ced82..37fe6f95 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,11 @@ and this project's packages adheres to [Semantic Versioning](http://semver.org/s
 
 ## [Unreleased]
 
+### Changed
+
+- Upgraded chart dependency to [kube-prometheus-stack-66.2.1](https://github.com/prometheus-community/helm-charts/releases/tag/kube-prometheus-stack-66.2.1)
+  - grafana from 8.5.0 to [8.6.0](https://github.com/grafana/helm-charts/releases/tag/grafana-8.6.0)
+
 ## [13.0.0] - 2024-11-15
 
 ### Changed
diff --git a/helm/kube-prometheus-stack/Chart.lock b/helm/kube-prometheus-stack/Chart.lock
index 6d6e4d44..a4d0e2a7 100644
--- a/helm/kube-prometheus-stack/Chart.lock
+++ b/helm/kube-prometheus-stack/Chart.lock
@@ -1,6 +1,6 @@
 dependencies:
 - name: kube-prometheus-stack
   repository: https://prometheus-community.github.io/helm-charts
-  version: 66.1.1
-digest: sha256:3089c94b8aea5a2a73ce8c8d43b51b2ead57c86567e84cb678bd04dfc79ce38a
-generated: "2024-11-12T11:29:37.394173872Z"
+  version: 66.2.1
+digest: sha256:d75bb9ecba6d71f0cf17fbb55561d47d88d0e2770b5668dc006f72d086b32a57
+generated: "2024-11-15T23:01:27.845792703Z"
diff --git a/helm/kube-prometheus-stack/Chart.yaml b/helm/kube-prometheus-stack/Chart.yaml
index 6678c1b6..957146f2 100644
--- a/helm/kube-prometheus-stack/Chart.yaml
+++ b/helm/kube-prometheus-stack/Chart.yaml
@@ -13,7 +13,7 @@ annotations:
   application.giantswarm.io/team: atlas
 dependencies:
   - name: kube-prometheus-stack
-    version: 66.1.1
+    version: 66.2.1
     repository: https://prometheus-community.github.io/helm-charts
 sources:
   - "https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-prometheus-stack"