diff --git a/argocd/overlays/argocd-notifications-controller-patch.yaml b/argocd/overlays/argocd-notifications-controller-patch.yaml
index 7ad416e..cbe7969 100644
--- a/argocd/overlays/argocd-notifications-controller-patch.yaml
+++ b/argocd/overlays/argocd-notifications-controller-patch.yaml
@@ -1,3 +1,4 @@
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: argocd-notifications-controller