diff --git a/software/backrest/backrest.nix b/software/backrest/backrest.nix
index df31a73..648b00d 100644
--- a/software/backrest/backrest.nix
+++ b/software/backrest/backrest.nix
@@ -1,5 +1,8 @@
 { pkgs, config, lib, cfg, ... }:
 
+# Thanks to Aires!
+# https://aires.fyi/blog/installing-a-custom-package-with-nix/
+
 let
 	backrest = pkgs.callPackage ./package.nix { inherit pkgs lib; };
 in