diff --git a/apps/templates/cert-manager.yaml b/apps/templates/cert-manager.yaml
index 75c7178..73cea07 100644
--- a/apps/templates/cert-manager.yaml
+++ b/apps/templates/cert-manager.yaml
@@ -73,6 +73,7 @@ kind: Ingress
 metadata:
   annotations:
     # add an annotation indicating the issuer to use.
+    cert-manager.io/acme-challenge-type: dns01
     cert-manager.io/cluster-issuer: test-roxedus-com
   name: myingress
   namespace: default