diff --git a/cluster/services/dns/authoritative.nix b/cluster/services/dns/authoritative.nix
index 8bfe4a1..8e8243f 100644
--- a/cluster/services/dns/authoritative.nix
+++ b/cluster/services/dns/authoritative.nix
@@ -61,4 +61,17 @@ in {
   systemd.services.coredns = {
     after = [ "pdns.service" ];
   };
+
+  consul.services.pdns = {
+    mode = "external";
+    definition.service = {
+      name = "authoritative-dns-backend";
+      address = config.links.localAuthoritativeDNS.ipv4;
+      port = config.links.localAuthoritativeDNS.port;
+      checks = lib.singleton {
+        interval = "60s";
+        tcp = config.links.localAuthoritativeDNS.tuple;
+      };
+    };
+  };
 }