diff --git a/machines/valkyrie/coredns/default.nix b/machines/valkyrie/coredns/default.nix
index 7d4d578..1a4d638 100644
--- a/machines/valkyrie/coredns/default.nix
+++ b/machines/valkyrie/coredns/default.nix
@@ -16,7 +16,9 @@
     config = ''
       datarift.nl:5454 {
         bind 127.0.0.1 ::1
-        tailscale datarift.nl
+        tailscale datarift.nl {
+          authkey {$TS_AUTHKEY}
+        }
         log
         errors
       }