diff --git a/pkgs/development/python-modules/pyls-black/default.nix b/pkgs/development/python-modules/pyls-black/default.nix
index b72d789ccfdd..d10e4930ac0c 100644
--- a/pkgs/development/python-modules/pyls-black/default.nix
+++ b/pkgs/development/python-modules/pyls-black/default.nix
@@ -1,5 +1,11 @@
-{ lib, buildPythonPackage, fetchFromGitHub
-, black, toml, pytestCheckHook, python-language-server, isPy3k
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, black
+, toml
+, pytestCheckHook
+, python-language-server
+, isPy3k
 }:
 
 buildPythonPackage rec {