diff --git a/hardware/server/mautrix-discord.nix b/hardware/server/mautrix-discord.nix
index 99488dc..f7c4251 100644
--- a/hardware/server/mautrix-discord.nix
+++ b/hardware/server/mautrix-discord.nix
@@ -1,3 +1,4 @@
+# derived from mautrix signal on nixpkgs -> https://github.com/NixOS/nixpkgs/blob/nixos-24.05/pkgs/servers/mautrix-signal/default.nix#L27
 { lib
 , config
 , pkgs
diff --git a/hardware/server/mautrix-whatsapp.nix b/hardware/server/mautrix-whatsapp.nix
index 5c6832b..36bae01 100644
--- a/hardware/server/mautrix-whatsapp.nix
+++ b/hardware/server/mautrix-whatsapp.nix
@@ -1,3 +1,4 @@
+# derived from mautrix signal on nixpkgs -> https://github.com/NixOS/nixpkgs/blob/nixos-24.05/pkgs/servers/mautrix-signal/default.nix#L27
 { lib
 , config
 , pkgs