diff --git a/python-fido2-no-mock.patch b/python-fido2-no-mock.patch
new file mode 100644
index 0000000..42d7348
--- /dev/null
+++ b/python-fido2-no-mock.patch
@@ -0,0 +1,52 @@
+Index: fido2-0.9.3/test/test_client.py
+===================================================================
+--- fido2-0.9.3.orig/test/test_client.py	2021-11-09 11:45:37.000000000 +0100
++++ fido2-0.9.3/test/test_client.py	2022-03-21 11:33:24.574736097 +0100
+@@ -29,7 +29,7 @@
+ 
+ from __future__ import absolute_import, unicode_literals
+ 
+-import mock
++import unittest.mock as mock
+ import unittest
+ from threading import Event, Timer
+ from binascii import a2b_hex
+Index: fido2-0.9.3/test/test_ctap1.py
+===================================================================
+--- fido2-0.9.3.orig/test/test_ctap1.py	2021-11-09 11:45:37.000000000 +0100
++++ fido2-0.9.3/test/test_ctap1.py	2022-03-21 11:33:53.026894591 +0100
+@@ -30,7 +30,7 @@ from __future__ import absolute_import,
+ from fido2.ctap1 import Ctap1, ApduError
+ from binascii import a2b_hex
+ import unittest
+-import mock
++import unittest.mock as mock
+ 
+ 
+ class TestCtap1(unittest.TestCase):
+Index: fido2-0.9.3/test/test_ctap2.py
+===================================================================
+--- fido2-0.9.3.orig/test/test_ctap2.py	2021-11-09 11:45:37.000000000 +0100
++++ fido2-0.9.3/test/test_ctap2.py	2022-03-21 11:34:20.103045403 +0100
+@@ -45,7 +45,7 @@ from cryptography.hazmat.backends import
+ from cryptography.hazmat.primitives.asymmetric import ec
+ 
+ import unittest
+-import mock
++import unittest.mock as mock
+ 
+ _AAGUID = a2b_hex("F8A011F38C0A4D15800617111F9EDC7D")
+ _INFO = a2b_hex(
+Index: fido2-0.9.3/test/test_pcsc.py
+===================================================================
+--- fido2-0.9.3.orig/test/test_pcsc.py	2021-11-09 11:45:37.000000000 +0100
++++ fido2-0.9.3/test/test_pcsc.py	2022-03-21 11:34:37.963144879 +0100
+@@ -28,7 +28,7 @@
+ from __future__ import absolute_import, unicode_literals
+ 
+ import unittest
+-import mock
++import unittest.mock as mock
+ import sys
+ from fido2.hid import CTAPHID
+ 
diff --git a/python-fido2.changes b/python-fido2.changes
index 05d7886..c5a1f51 100644
--- a/python-fido2.changes
+++ b/python-fido2.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Mon Mar 21 10:44:41 UTC 2022 - pgajdos@suse.com
+
+- do not require mock for build
+- added patches
+  fix https://github.com/Yubico/python-fido2/issues/135
+  + python-fido2-no-mock.patch
+
 -------------------------------------------------------------------
 Sat Jan 15 17:34:13 UTC 2022 - Dirk Müller <dmueller@suse.com>
 
diff --git a/python-fido2.spec b/python-fido2.spec
index 5cc8c0d..2e57113 100644
--- a/python-fido2.spec
+++ b/python-fido2.spec
@@ -27,8 +27,9 @@ Group:          Development/Languages/Python
 URL:            https://github.com/Yubico/python-fido2
 Source0:        https://github.com/Yubico/python-fido2/releases/download/%{version}/fido2-%{version}.tar.gz
 Source1:        https://github.com/Yubico/python-fido2/releases/download/%{version}/fido2-%{version}.tar.gz.sig
+# https://github.com/Yubico/python-fido2/issues/135
+Patch0:         python-fido2-no-mock.patch
 BuildRequires:  %{python_module cryptography >= 1.5}
-BuildRequires:  %{python_module mock >= 1.0.1}
 BuildRequires:  %{python_module pyfakefs >= 3.4}
 BuildRequires:  %{python_module setuptools}
 BuildRequires:  %{python_module six}