diff --git a/pkgs/development/python-modules/pysrt/default.nix b/pkgs/development/python-modules/pysrt/default.nix
index d94e1fec3a74..9be5028a8787 100644
--- a/pkgs/development/python-modules/pysrt/default.nix
+++ b/pkgs/development/python-modules/pysrt/default.nix
@@ -2,14 +2,16 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  setuptools,
   chardet,
-  nose,
+  pytestCheckHook,
+  fetchpatch2,
 }:
 
 buildPythonPackage rec {
   pname = "pysrt";
   version = "1.1.2";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "byroot";
@@ -18,16 +20,22 @@ buildPythonPackage rec {
     sha256 = "1f5hxyzlh5mdvvi52qapys9qcinffr6ghgivb6k4jxa92cbs3mfg";
   };
 
-  nativeCheckInputs = [ nose ];
-  checkPhase = ''
-    nosetests -v
-  '';
+  patches = [
+    (fetchpatch2 {
+      url = "https://github.com/byroot/pysrt/commit/93f52f6d4f70f4e18dc71deeaae0ec1e9100a50f.patch?full_index=1";
+      hash = "sha256-nikMPwj3OHvl6LunAfRk6ZbFUvVgPwF696Dt8R7BY4U=";
+    })
+  ];
+
+  build-system = [ setuptools ];
 
   propagatedBuildInputs = [ chardet ];
 
+  nativeCheckInputs = [ pytestCheckHook ];
+
   meta = with lib; {
     homepage = "https://github.com/byroot/pysrt";
-    license = licenses.gpl3;
+    license = licenses.gpl3Only;
     description = "Python library used to edit or create SubRip files";
     mainProgram = "srt";
   };