diff --git a/flake.nix b/flake.nix
index ff820ce..9e38f33 100644
--- a/flake.nix
+++ b/flake.nix
@@ -53,6 +53,13 @@
       default = beta;
     });
 
+    formatter = forAllSystems (
+      system: let
+        pkgs = nixpkgs.legacyPackages.${system};
+      in
+        pkgs.alejandra
+    );
+
     homeModules = rec {
       beta = import ./hm-module.nix {
         inherit self home-manager;