diff --git a/terraform/layer2-k8s/eks-kube-prometheus-stack.tf b/terraform/layer2-k8s/eks-kube-prometheus-stack.tf
index 888a8dc..170de42 100644
--- a/terraform/layer2-k8s/eks-kube-prometheus-stack.tf
+++ b/terraform/layer2-k8s/eks-kube-prometheus-stack.tf
@@ -128,7 +128,6 @@ grafana:
         - name: CloudWatch
           type: cloudwatch
           jsonData:
-            authType: credentials
             defaultRegion: "${local.region}"
         - name: Loki
           type: loki