diff --git a/pkgs/development/python-modules/jaconv/default.nix b/pkgs/development/python-modules/jaconv/default.nix
index e1813ef320ab..d56e02f9d674 100644
--- a/pkgs/development/python-modules/jaconv/default.nix
+++ b/pkgs/development/python-modules/jaconv/default.nix
@@ -2,31 +2,30 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
-  nose,
   pythonOlder,
+  setuptools,
   pytestCheckHook,
 }:
 
 buildPythonPackage rec {
   pname = "jaconv";
   version = "0.3.4";
-  format = "setuptools";
+  pyproject = true;
 
   disabled = pythonOlder "3.7";
 
   src = fetchFromGitHub {
     owner = "ikegami-yukino";
-    repo = pname;
+    repo = "jaconv";
     rev = "refs/tags/v${version}";
     hash = "sha256-9ruhOLaYNESeKOwJs3IN6ct66fSq7My9DOyA7/cH3d0=";
   };
 
-  doCheck = pythonOlder "3.12";
+  patches = [ ./use-pytest.patch ];
 
-  nativeCheckInputs = [
-    nose
-    pytestCheckHook
-  ];
+  build-system = [ setuptools ];
+
+  nativeCheckInputs = [ pytestCheckHook ];
 
   pythonImportsCheck = [ "jaconv" ];
 
diff --git a/pkgs/development/python-modules/jaconv/use-pytest.patch b/pkgs/development/python-modules/jaconv/use-pytest.patch
new file mode 100644
index 000000000000..b91704ee4f32
--- /dev/null
+++ b/pkgs/development/python-modules/jaconv/use-pytest.patch
@@ -0,0 +1,34 @@
+diff --git a/test_jaconv.py b/test_jaconv.py
+index 7e0a169..aaf180d 100644
+--- a/test_jaconv.py
++++ b/test_jaconv.py
+@@ -1,11 +1,8 @@
+ # -*- coding: utf-8 -*-
+ from __future__ import unicode_literals
+-from nose.tools import assert_equal, nottest
+ import jaconv
+ from functools import partial
+ 
+-assert_equal.__self__.maxDiff = None
+-
+ HIRAGANA = ('ぁあぃいぅうぇえぉおかがきぎくぐけげこごさざしじすずせぜそぞた',
+             'だちぢっつづてでとどなにぬねのはばぱひびぴふぶぷへべぺほぼぽま',
+             'みむめもゃやゅゆょよらりるれろわをんーゎゐゑゕゖゔゝゞ・「」。、')
+@@ -25,13 +22,15 @@ FULL_ASCII = ('！＂＃＄％＆＇（）＊＋，－．／：；＜＝＞？
+ FULL_DIGIT = '０１２３４５６７８９'
+ 
+ 
+-@nottest
++def assert_equal(x, y):
++    assert x == y
++
++
+ def _compare(mathod, lhs, rhs):
+     for i in range(len(lhs)):
+         assert_equal(mathod(lhs[i]), rhs[i])
+ 
+ 
+-@nottest
+ def _concat(*iterables):
+     result = ''
+     for iterable in iterables: