diff --git a/mistral_extra/tests/unit/actions/openstack/test_openstack_actions.py b/mistral_extra/tests/unit/actions/openstack/test_openstack_actions.py
index 27d8b50..dad3f56 100644
--- a/mistral_extra/tests/unit/actions/openstack/test_openstack_actions.py
+++ b/mistral_extra/tests/unit/actions/openstack/test_openstack_actions.py
@@ -12,7 +12,7 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-import mock
+from unittest import mock
 
 from mistral_extra.actions.openstack import actions
 from oslo_config import cfg
diff --git a/test-requirements.txt b/test-requirements.txt
index e0bc228..b8d6388 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -8,6 +8,5 @@ doc8>=0.6.0 # Apache-2.0
 oslotest>=3.2.0 # Apache-2.0
 stestr>=2.0.0 # Apache-2.0
 unittest2>=1.1.0 # BSD
-mock>=2.0.0 # BSD
 requests-mock>=1.2.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD