diff --git a/flake.nix b/flake.nix
index 58ba3e3..400c4cf 100644
--- a/flake.nix
+++ b/flake.nix
@@ -16,6 +16,7 @@
           apps = builtins.mapAttrs (_n: pkg: flake-utils.lib.mkApp { drv = pkg; }) legacyPackages;
           defaultApp = apps.brownpaper;
           packages = flake-utils.lib.flattenTree legacyPackages;
+          defaultPackage = packages.brownpaper;
           devShell = with pkgs; mkShell {
             buildInputs = [ cargo rustfmt nettle llvmPackages_10.clang llvmPackages_10.libclang pkgconfig ];
             LIBCLANG_PATH = "${llvmPackages_10.libclang}/lib";