diff --git a/nixos/modules/services/acme.nix b/nixos/modules/services/acme.nix
index 3b6cfd7..7f9a437 100755
--- a/nixos/modules/services/acme.nix
+++ b/nixos/modules/services/acme.nix
@@ -84,4 +84,5 @@ in {
     );
   };
   users.users.nginx.extraGroups = ["acme"];
+  users.groups.acme.members = ["nginx"];
 }