diff --git a/pkgs/development/python-modules/pyls-isort/default.nix b/pkgs/development/python-modules/pyls-isort/default.nix
index 5dc8cd76b1a2..cc2048cc0450 100644
--- a/pkgs/development/python-modules/pyls-isort/default.nix
+++ b/pkgs/development/python-modules/pyls-isort/default.nix
@@ -2,6 +2,7 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  setuptools,
   python-lsp-server,
   isort,
 }:
@@ -23,6 +24,8 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "pyls_isort" ];
 
+  build-system = [ setuptools ];
+
   dependencies = [
     isort
     python-lsp-server