diff --git a/flake.nix b/flake.nix
index 7190faa..240d86c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -54,6 +54,8 @@
               websockets
             ];
             src = ./cli;
+            pyproject = true;
+            build-system = [ setuptools ];
           };
 
           devShell = with pkgs; let