diff --git a/app-of-apps/headscale.yaml b/app-of-apps/headscale.yaml
index bc82acc..c7985b7 100644
--- a/app-of-apps/headscale.yaml
+++ b/app-of-apps/headscale.yaml
@@ -19,9 +19,9 @@ spec:
         - name: certmanager.enabled
           value: 'true'
         - name: certmanager.issuerRef.name
-          value: 'letsencrypt'
+          value: 'dnsimple-cert-manager-webhook-cert-manager-webhook-dnsimple-production'
         - name: headscale.certmanager.issuerRef.name
-          value: 'letsencrypt'
+          value: 'dnsimple-cert-manager-webhook-cert-manager-webhook-dnsimple-production'
         - name: headscale.config.dns.base_domain
           value: 'martyn.berlin'
         - name: ingress.enabled