diff --git a/app-of-apps/headscale.yaml b/app-of-apps/headscale.yaml
index 78c9b23..bc82acc 100644
--- a/app-of-apps/headscale.yaml
+++ b/app-of-apps/headscale.yaml
@@ -20,6 +20,8 @@ spec:
           value: 'true'
         - name: certmanager.issuerRef.name
           value: 'letsencrypt'
+        - name: headscale.certmanager.issuerRef.name
+          value: 'letsencrypt'
         - name: headscale.config.dns.base_domain
           value: 'martyn.berlin'
         - name: ingress.enabled