diff --git a/python-freezegun.changes b/python-freezegun.changes
index 4965921..4c8de10 100644
--- a/python-freezegun.changes
+++ b/python-freezegun.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Sep  4 16:32:05 UTC 2018 - Matěj Cepl <mcepl@suse.com>
+
+- Add remove_dependency_on_mock.patch which removes dependency on
+  python-mock for Python 3, where it is not required.
+
 -------------------------------------------------------------------
 Sun Jul 15 20:55:20 UTC 2018 - mimi.vx@gmail.com
 
diff --git a/python-freezegun.spec b/python-freezegun.spec
index 4d21eff..2e0deba 100644
--- a/python-freezegun.spec
+++ b/python-freezegun.spec
@@ -27,6 +27,8 @@ Group:          Development/Languages/Python
 URL:            https://github.com/spulec/freezegun
 Source:         https://files.pythonhosted.org/packages/source/f/freezegun/freezegun-%{version}.tar.gz
 Patch0:         _u_p37_tests.patch
+# https://github.com/spulec/freezegun/issues/259
+Patch1:         remove_dependency_on_mock.patch
 BuildRequires:  %{python_module devel}
 BuildRequires:  %{python_module python-dateutil > 2.0}
 BuildRequires:  %{python_module setuptools}
@@ -37,8 +39,8 @@ Requires:       python-python-dateutil > 2.0
 Requires:       python-six
 BuildArch:      noarch
 %if %{with tests}
-BuildRequires:  %{python_module mock}
 BuildRequires:  %{python_module nose}
+BuildRequires:  python2-mock
 %endif
 %python_subpackages
 
@@ -48,7 +50,7 @@ time by mocking the datetime module.
 
 %prep
 %setup -q -n freezegun-%{version}
-%patch0 -p1
+%autopatch -p1
 
 %build
 %python_build
diff --git a/remove_dependency_on_mock.patch b/remove_dependency_on_mock.patch
new file mode 100644
index 0000000..3e9fa01
--- /dev/null
+++ b/remove_dependency_on_mock.patch
@@ -0,0 +1,24 @@
+--- a/tests/test_ticking.py
++++ b/tests/test_ticking.py
+@@ -1,6 +1,9 @@
+ import datetime
+ import time
+-import mock
++try:
++    import mock
++except ImportError:
++    import unittest.mock as mock
+ 
+ from freezegun import freeze_time
+ from tests import utils
+--- a/tests/test_utils.py
++++ b/tests/test_utils.py
+@@ -1,4 +1,7 @@
+-import mock
++try:
++    import mock
++except ImportError:
++    import unittest.mock as mock
+ from nose.plugins import skip
+ 
+ from freezegun import api