diff --git a/argocd/prometheus-adapter.yaml b/argocd/prometheus-adapter.yaml
index 7d4a66b..06f339d 100644
--- a/argocd/prometheus-adapter.yaml
+++ b/argocd/prometheus-adapter.yaml
@@ -17,5 +17,5 @@ spec:
   source:
     chart: prometheus-adapter
     repoURL: https://prometheus-community.github.io/helm-charts
-    targetRevision: 4.7.0
+    targetRevision: 4.8.3