diff --git a/nix/shell.nix b/nix/shell.nix
index fa74369..2b1722f 100644
--- a/nix/shell.nix
+++ b/nix/shell.nix
@@ -1,7 +1,9 @@
 {
   perSystem = { pkgs, config, ... }: {
     devShells.default = pkgs.mkShell {
-      packages = with pkgs; [ ];
+      packages = with pkgs; [
+        rustfmt
+      ];
 
       inputsFrom = [
         (config.packages.default)