diff --git a/devdoc/repo_list b/devdoc/repo_list
index 63e21e1..93aa018 100644
--- a/devdoc/repo_list
+++ b/devdoc/repo_list
@@ -36,6 +36,7 @@ https://github.com/nix-community/emacs-overlay
 https://github.com/nix-community/emacs2nix
 https://github.com/nix-community/ethereum.nix
 https://github.com/nix-community/fenix
+https://github.com/nix-community/fetchTree-spec
 https://github.com/nix-community/flake-compat
 https://github.com/nix-community/flake-firefox-nightly
 https://github.com/nix-community/flake-gemini