diff --git a/python-sure-no-mock.patch b/python-sure-no-mock.patch
new file mode 100644
index 0000000..3fac1f9
--- /dev/null
+++ b/python-sure-no-mock.patch
@@ -0,0 +1,23 @@
+--- a/sure/core.py
++++ b/sure/core.py
+@@ -21,7 +21,10 @@
+ try:
+     from mock import _CallList
+ except ImportError:
+-    from mock.mock import _CallList
++    try:
++        from mock.mock import _CallList
++    except ImportError:
++        from unittest.mock import _CallList
+ 
+ import inspect
+ from six import (
+@@ -40,6 +43,7 @@ class Anything(object):
+     def __eq__(self, _):
+         return True
+ 
++
+ anything = Anything()
+ 
+ 
+
diff --git a/python-sure.changes b/python-sure.changes
index f506340..95d87f4 100644
--- a/python-sure.changes
+++ b/python-sure.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Wed May  4 08:38:45 UTC 2022 - pgajdos@suse.com
+
+- do not require mock for build nor runtime
+- added patches
+  fix https://github.com/gabrielfalcao/sure/pull/161
+  + python-sure-no-mock.patch
+
 -------------------------------------------------------------------
 Sun Dec 12 16:15:50 UTC 2021 - Ben Greiner <code@bnavigator.de>
 
diff --git a/python-sure.spec b/python-sure.spec
index dde88c7..76e6570 100644
--- a/python-sure.spec
+++ b/python-sure.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python-sure
 #
-# Copyright (c) 2021 SUSE LLC
+# Copyright (c) 2022 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -25,14 +25,14 @@ License:        GPL-3.0-or-later
 Group:          Development/Languages/Python
 URL:            https://github.com/gabrielfalcao/sure
 Source:         https://files.pythonhosted.org/packages/source/s/sure/sure-%{version}.tar.gz
+# https://github.com/gabrielfalcao/sure/pull/161
+Patch0:         python-sure-no-mock.patch
 BuildRequires:  %{python_module mock >= 2.0.0}
 BuildRequires:  %{python_module pytest}
 BuildRequires:  %{python_module setuptools}
 BuildRequires:  %{python_module six >= 1.10.0}
 BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
-# regarding mock: https://github.com/gabrielfalcao/sure/pull/161
-Requires:       python-mock >= 2.0.0
 Requires:       python-six >= 1.10.0
 Requires(post): update-alternatives
 Requires(postun):update-alternatives
@@ -45,6 +45,7 @@ heavily inspired by should.js
 
 %prep
 %setup -q -n sure-%{version}
+%patch0 -p1
 sed -i '/^#!/d' sure/*.py
 sed -i 's/--cov=sure//' setup.cfg