diff --git a/modules/mail.nix b/modules/mail.nix
index 5d9c1b3..5b3ed68 100644
--- a/modules/mail.nix
+++ b/modules/mail.nix
@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ config, pkgs, lib, ... }:
 let
   hostname = "mail.${config.fsr.domain}";
   domain = config.fsr.domain;