diff --git a/pkgs/development/tools/pypi-mirror/default.nix b/pkgs/development/tools/pypi-mirror/default.nix
index d546b6abe898..8d55d7b73cf9 100644
--- a/pkgs/development/tools/pypi-mirror/default.nix
+++ b/pkgs/development/tools/pypi-mirror/default.nix
@@ -5,6 +5,7 @@
 python3.pkgs.buildPythonApplication rec {
   pname = "pypi-mirror";
   version = "5.2.1";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "montag451";
@@ -13,6 +14,8 @@ python3.pkgs.buildPythonApplication rec {
     hash = "sha256-hRqQDYgOKpv4jmNvyrt/+EInPM/Xwsr3IjtrySAGRgY=";
   };
 
+  build-system = [ python3.pkgs.setuptools ];
+
   pythonImportsCheck = [ "pypi_mirror" ];
 
   meta = with lib; {