diff --git a/dev/treefmt.nix b/dev/treefmt.nix
index c5a67e7..2f80e31 100644
--- a/dev/treefmt.nix
+++ b/dev/treefmt.nix
@@ -1,6 +1,6 @@
 { pkgs, ... }: {
   # Used to find the project root
-  projectRootFile = "flake.lock";
+  projectRootFile = ".git/config";
 
   programs.hclfmt.enable = true;