diff --git a/flake.nix b/flake.nix
index e33d645..1b05de3 100644
--- a/flake.nix
+++ b/flake.nix
@@ -56,6 +56,7 @@
       };
     };
   in {
+    formatter.x86_64-linux = nixpkgs.legacyPackages.x86_64-linux.nixfmt-rfc-style;
     devShells."x86_64-linux".default = pkgs.mkShell {
       buildInputs = [
         rs-toolchain