diff --git a/python-transaction.spec b/python-transaction.spec
index da45856..b6ad27d 100644
--- a/python-transaction.spec
+++ b/python-transaction.spec
@@ -1,11 +1,12 @@
 Name:           python-transaction
 Version:        3.0.1
-Release:        5%{?dist}
+Release:        6%{?dist}
 Summary:        Transaction management for Python
 
 License:        ZPLv2.1
 URL:            https://pypi.io/project/transaction
 Source0:        %pypi_source transaction
+Patch1:         transaction-switch-to-unittest-mock.patch
 
 BuildArch:      noarch
 
@@ -13,7 +14,6 @@ BuildRequires:  python3-devel
 BuildRequires:  python3-setuptools
 BuildRequires:  python3-pytest
 BuildRequires:  python3-zope-interface
-BuildRequires:  python3-mock
 
 
 %global _description\
@@ -32,7 +32,7 @@ Requires:       python3-zope-interface
 
 
 %prep
-%setup -q -n transaction-%{version}
+%autosetup -n transaction-%{version} -p1
 
 # Remove bundled egg-info in case it exists
 rm -rf %{modname}.egg-info
@@ -47,7 +47,7 @@ rm -rf %{modname}.egg-info
 
 
 %check
-PYTHONPATH=$(pwd) %{__python3} setup.py test
+%pytest
 
 
 %files -n python3-transaction
@@ -57,6 +57,10 @@ PYTHONPATH=$(pwd) %{__python3} setup.py test
 
 
 %changelog
+* Thu Apr 21 2022 Ján ONDREJ (SAL) <ondrejj(at)salstar.sk> - 3.0.1-6
+- According to deprecation of mock switch to unittest.mock
+- Use pytest macro in check section
+
 * Fri Jan 21 2022 Fedora Release Engineering <releng@fedoraproject.org> - 3.0.1-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild
 
diff --git a/transaction-switch-to-unittest-mock.patch b/transaction-switch-to-unittest-mock.patch
new file mode 100644
index 0000000..8a8888d
--- /dev/null
+++ b/transaction-switch-to-unittest-mock.patch
@@ -0,0 +1,69 @@
+diff -ur transaction-3.0.1/setup.py transaction-3.0.1.sal/setup.py
+--- transaction-3.0.1/setup.py	1970-01-01 01:00:00.000000000 +0100
++++ transaction-3.0.1.sal/setup.py	2022-04-21 09:55:53.338715279 +0200
+@@ -25,7 +25,7 @@
+ 
+ README = _read_file('README.rst') + '\n\n' + _read_file('CHANGES.rst')
+ 
+-tests_require = ['mock']
++tests_require = ['unittest.mock']
+ 
+ setup(name='transaction',
+       version=version,
+diff -ur transaction-3.0.1/src/transaction/tests/test__manager.py transaction-3.0.1.sal/src/transaction/tests/test__manager.py
+--- transaction-3.0.1/src/transaction/tests/test__manager.py	1970-01-01 01:00:00.000000000 +0100
++++ transaction-3.0.1.sal/src/transaction/tests/test__manager.py	2022-04-21 09:56:53.648218742 +0200
+@@ -11,7 +11,7 @@
+ # FOR A PARTICULAR PURPOSE
+ #
+ ##############################################################################
+-import mock
++import unittest.mock
+ import unittest
+ 
+ import zope.interface.verify
+@@ -671,15 +671,15 @@
+         # If a datamanager registers for synchonization after a
+         # transaction has started, we should call newTransaction so it
+         # can do necessry setup.
+-        import mock
++        import unittest.mock
+         from .. import TransactionManager
+         manager = TransactionManager()
+-        sync1 = mock.MagicMock()
++        sync1 = unittest.mock.MagicMock()
+         manager.registerSynch(sync1)
+         sync1.newTransaction.assert_not_called()
+         t = manager.begin()
+         sync1.newTransaction.assert_called_with(t)
+-        sync2 = mock.MagicMock()
++        sync2 = unittest.mock.MagicMock()
+         manager.registerSynch(sync2)
+         sync2.newTransaction.assert_called_with(t)
+ 
+@@ -746,8 +746,8 @@
+     def test_sync_registration_thread_local_manager(self):
+         import transaction
+ 
+-        sync = mock.MagicMock()
+-        sync2 = mock.MagicMock()
++        sync = unittest.mock.MagicMock()
++        sync2 = unittest.mock.MagicMock()
+         self.assertFalse(transaction.manager.registeredSynchs())
+         transaction.manager.registerSynch(sync)
+         self.assertTrue(transaction.manager.registeredSynchs())
+diff -ur transaction-3.0.1/src/transaction.egg-info/requires.txt transaction-3.0.1.sal/src/transaction.egg-info/requires.txt
+--- transaction-3.0.1/src/transaction.egg-info/requires.txt	1970-01-01 01:00:00.000000000 +0100
++++ transaction-3.0.1.sal/src/transaction.egg-info/requires.txt	2022-04-21 09:56:25.300922162 +0200
+@@ -5,9 +5,9 @@
+ repoze.sphinx.autointerface
+ 
+ [test]
+-mock
++unittest.mock
+ 
+ [testing]
+ nose
+ coverage
+-mock
++unittest.mock