diff --git a/modules/nix/cache-server.nix b/modules/nix/cache-server.nix
index 40a1d2c..ae4d34c 100644
--- a/modules/nix/cache-server.nix
+++ b/modules/nix/cache-server.nix
@@ -38,7 +38,7 @@
     # openssh.authorizedKeys.keys = [ "ssh-ed25519 AAAA... client@host" ];
     #
     # Avoid absolute keyFiles paths here because they break pure flake evaluation.
-    openssh.authorizedKeys.keys = [ ];
+    openssh.authorizedKeys.keys = ["ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFDEA1S2ikpObREgbP5uVBWMxIOGbY8B+Wx7VTZK1m6t root@server" ];
   };
 
   services.openssh.enable = true;