diff --git a/pkgs/development/python-modules/extract-msg/default.nix b/pkgs/development/python-modules/extract-msg/default.nix
index c3c8118f0afc..c687ef3272f7 100644
--- a/pkgs/development/python-modules/extract-msg/default.nix
+++ b/pkgs/development/python-modules/extract-msg/default.nix
@@ -1,17 +1,18 @@
-{ lib
-, beautifulsoup4
-, buildPythonPackage
-, compressed-rtf
-, ebcdic
-, fetchFromGitHub
-, olefile
-, pytestCheckHook
-, pythonOlder
-, pythonRelaxDepsHook
-, red-black-tree-mod
-, rtfde
-, setuptools
-, tzlocal
+{
+  lib,
+  beautifulsoup4,
+  buildPythonPackage,
+  compressed-rtf,
+  ebcdic,
+  fetchFromGitHub,
+  olefile,
+  pytestCheckHook,
+  pythonOlder,
+  pythonRelaxDepsHook,
+  red-black-tree-mod,
+  rtfde,
+  setuptools,
+  tzlocal,
 }:
 
 buildPythonPackage rec {
@@ -48,17 +49,11 @@ buildPythonPackage rec {
     tzlocal
   ];
 
-  nativeCheckInputs = [
-    pytestCheckHook
-  ];
+  nativeCheckInputs = [ pytestCheckHook ];
 
-  pythonImportsCheck = [
-    "extract_msg"
-  ];
+  pythonImportsCheck = [ "extract_msg" ];
 
-  pytestFlagsArray = [
-    "extract_msg_tests/*.py"
-  ];
+  pytestFlagsArray = [ "extract_msg_tests/*.py" ];
 
   meta = with lib; {
     description = "Extracts emails and attachments saved in Microsoft Outlook's .msg files";