diff --git a/projects/grafana/project.yml b/projects/grafana/project.yml
index 1250d1ff..08e9f935 100644
--- a/projects/grafana/project.yml
+++ b/projects/grafana/project.yml
@@ -5,7 +5,7 @@ apps:
   namespace: prometheus
   repoURL: https://prometheus-community.github.io/helm-charts
   chart: prometheus
-  targetRevision: 15.5.2
+  targetRevision: 15.5.3
 - name: loki-stack
   existingNamespace: prometheus
   repoURL: https://grafana.github.io/helm-charts