diff --git a/flake.nix b/flake.nix
index 9b13ad6..7e26a60 100644
--- a/flake.nix
+++ b/flake.nix
@@ -139,6 +139,7 @@
               cargo-watch
               hyperfine
               just
+              nixfmt-rfc-style
               rust-dev-toolchain
               watchexec
             ]