diff --git a/letsencrypt/acme.nix b/letsencrypt/acme.nix
index f5de1d5..ea2467e 100644
--- a/letsencrypt/acme.nix
+++ b/letsencrypt/acme.nix
@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ config, pkgs, lib, ... }:
 let
   cfg = config.services.userdata;
 in