diff --git a/inventories/z9/hosts.yaml b/inventories/z9/hosts.yaml
index 319f81756..a8c26216c 100644
--- a/inventories/z9/hosts.yaml
+++ b/inventories/z9/hosts.yaml
@@ -1,8 +1,5 @@
 all:
   hosts:
-    authoritative-dns:
-      ansible_host: authoritative-dns.z9.ccchh.net
-      ansible_user: chaos
     dooris:
       ansible_host: dooris.z9.ccchh.net
       ansible_user: chaos
@@ -36,7 +33,6 @@ infrastructure_authorized_keys_hosts:
   hosts:
     dooris:
     light:
-    authoritative-dns:
     waybackproxy:
     yate:
 nginx_hosts:
@@ -52,7 +48,6 @@ proxmox_vm_template_hosts:
     thinkcccore0:
 alloy_hosts:
   hosts:
-    authoritative-dns:
     light:
     yate:
     dooris: