diff --git a/clusters/sit/kustomization.yaml b/clusters/sit/kustomization.yaml
index b32daa6..6ed69fa 100644
--- a/clusters/sit/kustomization.yaml
+++ b/clusters/sit/kustomization.yaml
@@ -5,7 +5,7 @@ resources:
   - namespace.yaml
   - observability-agent.yaml
   - prometheus-agent-configmap.yaml
-patches:
+patchesStrategicMerge:
   - prometheus-agent-configmap-patch-fluxcd.yaml
 ---
 apiVersion: kustomize.config.k8s.io/v1beta1