diff --git a/app-of-apps/dex.yaml b/app-of-apps/dex.yaml
index 2b4b8b2..f3dc681 100644
--- a/app-of-apps/dex.yaml
+++ b/app-of-apps/dex.yaml
@@ -23,6 +23,7 @@ spec:
                   pathType: Prefix
           annotations:
             cert-manager.io/cluster-issuer: letsencrypt
+            external-dns.alpha.kubernetes.io/target: scalecable.martyn.berlin
           tls:
             - hosts:
                 - "auth.martyn.berlin"