diff --git a/argocd/applications/ntfy.yaml b/argocd/applications/ntfy.yaml
index 58695be..3d6db9c 100644
--- a/argocd/applications/ntfy.yaml
+++ b/argocd/applications/ntfy.yaml
@@ -11,3 +11,6 @@ spec:
     path: ntfy
     repoURL: https://git.pyrocufflink.blue/infra/kubernetes.git
     targetRevision: master
+  syncPolicy:
+    automated:
+      prune: true