diff --git a/flake.nix b/flake.nix
index 5b01989..6b25d0f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -8,7 +8,7 @@
       let pkgs = nixpkgs.legacyPackages.${system};
       in {
         devShell = pkgs.mkShell {
-          buildInputs = with pkgs; [ cargo rustc pkgconfig openssl.dev ];
+          buildInputs = with pkgs; [ cargo rustc rustfmt pkgconfig openssl.dev ];
         };
       });
 }