diff --git a/fix-mock-python-3.8.patch b/fix-mock-python-3.8.patch
new file mode 100644
index 0000000..8a943a7
--- /dev/null
+++ b/fix-mock-python-3.8.patch
@@ -0,0 +1,46 @@
+From b2683fdfc2fbd67dfc14bfc8e9d2c06530975397 Mon Sep 17 00:00:00 2001
+From: Bruno Oliveira <bruno@esss.com.br>
+Date: Fri, 3 May 2019 08:58:31 -0300
+Subject: [PATCH] Fix tests due to new formatting in mock 3.0 and python 3.8
+
+---
+ test_pytest_mock.py | 10 +++++-----
+ 1 file changed, 5 insertions(+), 5 deletions(-)
+
+diff --git a/test_pytest_mock.py b/test_pytest_mock.py
+index 7bc38cb..562ff0c 100644
+--- a/test_pytest_mock.py
++++ b/test_pytest_mock.py
+@@ -10,11 +10,11 @@
+ 
+ # could not make some of the tests work on PyPy, patches are welcome!
+ skip_pypy = pytest.mark.skipif(
+-    platform.python_implementation() == "PyPy", reason="could not make work on pypy"
++    platform.python_implementation() == "PyPy", reason="could not make it work on pypy"
+ )
+ 
+-# Python 3.8 changed the output formatting (bpo-35500).
+-PY38 = sys.version_info >= (3, 8)
++# Python 3.8 changed the output formatting (bpo-35500), which has been ported to mock 3.0
++NEW_FORMATTING = sys.version_info >= (3, 8) or sys.version_info[0] == 2
+ 
+ 
+ @pytest.fixture
+@@ -209,7 +209,7 @@ def test_repr_with_name(self, mocker):
+ 
+     def __test_failure_message(self, mocker, **kwargs):
+         expected_name = kwargs.get("name") or "mock"
+-        if PY38:
++        if NEW_FORMATTING:
+             msg = "expected call not found.\nExpected: {0}()\nActual: not called."
+         else:
+             msg = "Expected call: {0}()\nNot called"
+@@ -620,7 +620,7 @@ def test(mocker):
+     """
+     )
+     result = testdir.runpytest("-s")
+-    if PY38:
++    if NEW_FORMATTING:
+         expected_lines = [
+             "*AssertionError: expected call not found.",
+             "*Expected: mock('', bar=4)",
diff --git a/python-pytest-mock.spec b/python-pytest-mock.spec
index 9357c92..3a254ca 100644
--- a/python-pytest-mock.spec
+++ b/python-pytest-mock.spec
@@ -7,7 +7,7 @@ to worry about undoing patches at the end of a test.
 
 Name:           python-%{pypi_name}
 Version:        1.10.4
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Thin-wrapper around the mock package for easier use with py.test
 
 License:        MIT
@@ -16,6 +16,8 @@ Source0:        https://files.pythonhosted.org/packages/source/p/pytest-mock/pyt
 BuildArch:      noarch
 # Fix tests expectations with latest pytest (4.6.3+)
 Patch0:         fix-expectations-pytest-4.6.3.patch
+# Fix tests due to new formatting in mock 3.0 and python 3.8 (See https://github.com/pytest-dev/pytest-mock/commit/b3badafebedea3605c90eb22a68adff2885a8bb0)
+Patch1:         fix-mock-python-3.8.patch
 
 %description
 %{desc}
@@ -92,6 +94,9 @@ PYTHONPATH="$(pwd)" py.test-%{python3_version} test_pytest_mock.py
 
 
 %changelog
+* Thu Aug 01 2019 Julien Enselme <jujens@jujens.eu> - 1.10.4-4
+- Fix build issues with python 3.8 and mock 3.0
+
 * Tue Jul 30 2019 Julien Enselme <jujens@jujens.eu> - 1.10.4-3
 - Fix build issues with pytest 4.6.3