diff --git a/flake.nix b/flake.nix
index f07efe8..8cb4e76 100644
--- a/flake.nix
+++ b/flake.nix
@@ -45,6 +45,7 @@
       };
     in {
       packages.default = heracles;
+      formatter = pkgs.alejandra;
     })
     // {
       nixosModule = {