diff --git a/magnum/tests/base.py b/magnum/tests/base.py
index 92cae3790b..db6da9e537 100644
--- a/magnum/tests/base.py
+++ b/magnum/tests/base.py
@@ -15,9 +15,9 @@
 
 import copy
 import os
+from unittest import mock
 
 import fixtures
-import mock
 from oslo_config import cfg
 from oslo_log import log
 import oslo_messaging
diff --git a/magnum/tests/fakes.py b/magnum/tests/fakes.py
index caadba6a2b..4407975306 100644
--- a/magnum/tests/fakes.py
+++ b/magnum/tests/fakes.py
@@ -10,8 +10,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
 import time
+from unittest import mock
 
 from oslo_service import loopingcall
 
diff --git a/magnum/tests/unit/api/base.py b/magnum/tests/unit/api/base.py
index 4d02ba456d..a4dd3fef63 100644
--- a/magnum/tests/unit/api/base.py
+++ b/magnum/tests/unit/api/base.py
@@ -18,8 +18,9 @@
 # https://bugs.launchpad.net/ironic/+bug/1255115.
 
 # NOTE(deva): import auth_token so we can override a config option
+from unittest import mock
+
 from keystonemiddleware import auth_token  # noqa
-import mock
 from oslo_config import cfg
 import pecan
 import pecan.testing
diff --git a/magnum/tests/unit/api/controllers/test_base.py b/magnum/tests/unit/api/controllers/test_base.py
index 9c565cb84d..b990ede0ca 100644
--- a/magnum/tests/unit/api/controllers/test_base.py
+++ b/magnum/tests/unit/api/controllers/test_base.py
@@ -10,7 +10,8 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-import mock
+from unittest import mock
+
 from webob import exc
 
 from magnum.api.controllers import base
diff --git a/magnum/tests/unit/api/controllers/test_root.py b/magnum/tests/unit/api/controllers/test_root.py
index 02ad31e45c..94a2fbb759 100644
--- a/magnum/tests/unit/api/controllers/test_root.py
+++ b/magnum/tests/unit/api/controllers/test_root.py
@@ -10,8 +10,9 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
+from unittest import mock
+
 import fixtures
-import mock
 from oslo_config import cfg
 from webob import exc as webob_exc
 
diff --git a/magnum/tests/unit/api/controllers/v1/test_bay.py b/magnum/tests/unit/api/controllers/v1/test_bay.py
index 960a4066e6..5554e001bc 100644
--- a/magnum/tests/unit/api/controllers/v1/test_bay.py
+++ b/magnum/tests/unit/api/controllers/v1/test_bay.py
@@ -11,8 +11,8 @@
 #    limitations under the License.
 
 import datetime
+from unittest import mock
 
-import mock
 from oslo_config import cfg
 from oslo_utils import timeutils
 from oslo_utils import uuidutils
diff --git a/magnum/tests/unit/api/controllers/v1/test_baymodel.py b/magnum/tests/unit/api/controllers/v1/test_baymodel.py
index eafedb4d60..b0f5ff86d1 100644
--- a/magnum/tests/unit/api/controllers/v1/test_baymodel.py
+++ b/magnum/tests/unit/api/controllers/v1/test_baymodel.py
@@ -11,8 +11,8 @@
 #    limitations under the License.
 
 import datetime
+from unittest import mock
 
-import mock
 from oslo_utils import timeutils
 from oslo_utils import uuidutils
 from six.moves.urllib import parse as urlparse
diff --git a/magnum/tests/unit/api/controllers/v1/test_certificate.py b/magnum/tests/unit/api/controllers/v1/test_certificate.py
index e65af08a4f..fcf621782f 100644
--- a/magnum/tests/unit/api/controllers/v1/test_certificate.py
+++ b/magnum/tests/unit/api/controllers/v1/test_certificate.py
@@ -10,7 +10,8 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-import mock
+from unittest import mock
+
 from oslo_utils import uuidutils
 
 from magnum.api.controllers.v1 import certificate as api_cert
diff --git a/magnum/tests/unit/api/controllers/v1/test_cluster.py b/magnum/tests/unit/api/controllers/v1/test_cluster.py
index 1fd6266af5..5784cd1219 100644
--- a/magnum/tests/unit/api/controllers/v1/test_cluster.py
+++ b/magnum/tests/unit/api/controllers/v1/test_cluster.py
@@ -11,8 +11,8 @@
 #    limitations under the License.
 
 import datetime
+from unittest import mock
 
-import mock
 from oslo_config import cfg
 from oslo_utils import timeutils
 from oslo_utils import uuidutils
diff --git a/magnum/tests/unit/api/controllers/v1/test_cluster_actions.py b/magnum/tests/unit/api/controllers/v1/test_cluster_actions.py
index fd8a1bf110..41fdac53e1 100644
--- a/magnum/tests/unit/api/controllers/v1/test_cluster_actions.py
+++ b/magnum/tests/unit/api/controllers/v1/test_cluster_actions.py
@@ -10,7 +10,7 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-import mock
+from unittest import mock
 
 from magnum.conductor import api as rpcapi
 import magnum.conf
diff --git a/magnum/tests/unit/api/controllers/v1/test_cluster_template.py b/magnum/tests/unit/api/controllers/v1/test_cluster_template.py
index 782b7d28eb..3ff9b69803 100644
--- a/magnum/tests/unit/api/controllers/v1/test_cluster_template.py
+++ b/magnum/tests/unit/api/controllers/v1/test_cluster_template.py
@@ -11,8 +11,8 @@
 #    limitations under the License.
 
 import datetime
+from unittest import mock
 
-import mock
 from oslo_config import cfg
 from oslo_utils import timeutils
 from oslo_utils import uuidutils
diff --git a/magnum/tests/unit/api/controllers/v1/test_federation.py b/magnum/tests/unit/api/controllers/v1/test_federation.py
index c685b15e90..e5f25bb93b 100644
--- a/magnum/tests/unit/api/controllers/v1/test_federation.py
+++ b/magnum/tests/unit/api/controllers/v1/test_federation.py
@@ -11,7 +11,7 @@
 #    under the License.
 
 import datetime
-import mock
+from unittest import mock
 
 from oslo_config import cfg
 from oslo_utils import uuidutils
diff --git a/magnum/tests/unit/api/controllers/v1/test_magnum_service.py b/magnum/tests/unit/api/controllers/v1/test_magnum_service.py
index 3636016774..86412702a0 100644
--- a/magnum/tests/unit/api/controllers/v1/test_magnum_service.py
+++ b/magnum/tests/unit/api/controllers/v1/test_magnum_service.py
@@ -10,7 +10,7 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-import mock
+from unittest import mock
 
 from magnum.api.controllers.v1 import magnum_services as mservice
 from magnum.api import servicegroup
diff --git a/magnum/tests/unit/api/controllers/v1/test_nodegroup.py b/magnum/tests/unit/api/controllers/v1/test_nodegroup.py
index 78c6e0ee12..147a7e165a 100644
--- a/magnum/tests/unit/api/controllers/v1/test_nodegroup.py
+++ b/magnum/tests/unit/api/controllers/v1/test_nodegroup.py
@@ -14,7 +14,7 @@
 #    under the License.
 
 import datetime
-import mock
+from unittest import mock
 
 from oslo_utils import timeutils
 from oslo_utils import uuidutils
diff --git a/magnum/tests/unit/api/controllers/v1/test_quota.py b/magnum/tests/unit/api/controllers/v1/test_quota.py
index c62eaaaa2d..9b4406a7ca 100644
--- a/magnum/tests/unit/api/controllers/v1/test_quota.py
+++ b/magnum/tests/unit/api/controllers/v1/test_quota.py
@@ -10,7 +10,7 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-import mock
+from unittest import mock
 
 from keystoneauth1 import exceptions as ka_exception
 
diff --git a/magnum/tests/unit/api/controllers/v1/test_stats.py b/magnum/tests/unit/api/controllers/v1/test_stats.py
index 1cb1b2e81c..bb7aac28f4 100644
--- a/magnum/tests/unit/api/controllers/v1/test_stats.py
+++ b/magnum/tests/unit/api/controllers/v1/test_stats.py
@@ -10,7 +10,7 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-import mock
+from unittest import mock
 
 from webtest.app import AppError
 
diff --git a/magnum/tests/unit/api/controllers/v1/test_types.py b/magnum/tests/unit/api/controllers/v1/test_types.py
index fada139dce..f086310f17 100644
--- a/magnum/tests/unit/api/controllers/v1/test_types.py
+++ b/magnum/tests/unit/api/controllers/v1/test_types.py
@@ -12,9 +12,10 @@
 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #    License for the specific language governing permissions and limitations
 #    under the License.
+from unittest import mock
+
 from oslo_utils import uuidutils
 
-import mock
 import six
 import webtest
 import wsme
diff --git a/magnum/tests/unit/api/controllers/v1/test_utils.py b/magnum/tests/unit/api/controllers/v1/test_utils.py
index 6d670e9943..0236d1ef4f 100644
--- a/magnum/tests/unit/api/controllers/v1/test_utils.py
+++ b/magnum/tests/unit/api/controllers/v1/test_utils.py
@@ -14,7 +14,8 @@
 #    under the License.
 
 import jsonpatch
-import mock
+from unittest import mock
+
 from oslo_utils import uuidutils
 import wsme
 
diff --git a/magnum/tests/unit/api/test_attr_validator.py b/magnum/tests/unit/api/test_attr_validator.py
index 02c0be741f..e1454d1bf7 100644
--- a/magnum/tests/unit/api/test_attr_validator.py
+++ b/magnum/tests/unit/api/test_attr_validator.py
@@ -14,8 +14,8 @@
 
 
 from glanceclient import exc as glance_exception
-import mock
 from novaclient import exceptions as nova_exc
+from unittest import mock
 
 from magnum.api import attr_validator
 from magnum.common import exception
diff --git a/magnum/tests/unit/api/test_expose.py b/magnum/tests/unit/api/test_expose.py
index 54caf93c93..7618f11faa 100644
--- a/magnum/tests/unit/api/test_expose.py
+++ b/magnum/tests/unit/api/test_expose.py
@@ -10,7 +10,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
+from unittest import mock
 
 from magnum.api import expose
 from magnum.tests import base
diff --git a/magnum/tests/unit/api/test_hooks.py b/magnum/tests/unit/api/test_hooks.py
index f7b9a9aa5a..9332c93120 100644
--- a/magnum/tests/unit/api/test_hooks.py
+++ b/magnum/tests/unit/api/test_hooks.py
@@ -13,9 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from unittest import mock
+
 import six
 
-import mock
 from oslo_config import cfg
 import oslo_messaging as messaging
 
diff --git a/magnum/tests/unit/api/test_servicegroup.py b/magnum/tests/unit/api/test_servicegroup.py
index 6db4a62834..3a12e9235d 100644
--- a/magnum/tests/unit/api/test_servicegroup.py
+++ b/magnum/tests/unit/api/test_servicegroup.py
@@ -11,8 +11,8 @@
 # limitations under the License.
 
 import datetime
+from unittest import mock
 
-import mock
 from oslo_utils import timeutils
 import pytz
 
diff --git a/magnum/tests/unit/api/test_validation.py b/magnum/tests/unit/api/test_validation.py
index b1c1149a64..e6d89e3129 100644
--- a/magnum/tests/unit/api/test_validation.py
+++ b/magnum/tests/unit/api/test_validation.py
@@ -13,7 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
+
 from six.moves import reload_module
 
 from magnum.api import validation as v
diff --git a/magnum/tests/unit/cmd/test_api.py b/magnum/tests/unit/cmd/test_api.py
index ea55eadbf7..539f7871d7 100644
--- a/magnum/tests/unit/cmd/test_api.py
+++ b/magnum/tests/unit/cmd/test_api.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 oslo_concurrency import processutils
 
diff --git a/magnum/tests/unit/cmd/test_conductor.py b/magnum/tests/unit/cmd/test_conductor.py
index c46c0f5d82..622d506841 100644
--- a/magnum/tests/unit/cmd/test_conductor.py
+++ b/magnum/tests/unit/cmd/test_conductor.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 oslo_concurrency import processutils
 
diff --git a/magnum/tests/unit/cmd/test_db_manage.py b/magnum/tests/unit/cmd/test_db_manage.py
index ae81ca1e0a..f2eddea0f6 100644
--- a/magnum/tests/unit/cmd/test_db_manage.py
+++ b/magnum/tests/unit/cmd/test_db_manage.py
@@ -12,7 +12,8 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-import mock
+from unittest import mock
+
 import six
 
 from magnum.cmd import db_manage
diff --git a/magnum/tests/unit/cmd/test_driver_manage.py b/magnum/tests/unit/cmd/test_driver_manage.py
index 6c99906ae4..ad0ce3f467 100644
--- a/magnum/tests/unit/cmd/test_driver_manage.py
+++ b/magnum/tests/unit/cmd/test_driver_manage.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 magnum.cmd import driver_manage
 from magnum.tests import base
diff --git a/magnum/tests/unit/common/cert_manager/test_barbican.py b/magnum/tests/unit/common/cert_manager/test_barbican.py
index 445f418975..afd22b1a69 100644
--- a/magnum/tests/unit/common/cert_manager/test_barbican.py
+++ b/magnum/tests/unit/common/cert_manager/test_barbican.py
@@ -12,12 +12,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from unittest import mock
 import uuid
 
 from barbicanclient.v1 import client as barbican_client
 from barbicanclient.v1 import containers
 from barbicanclient.v1 import secrets
-import mock
 from mock import patch
 
 from magnum.common.cert_manager import barbican_cert_manager as bcm
diff --git a/magnum/tests/unit/common/cert_manager/test_cert_manager.py b/magnum/tests/unit/common/cert_manager/test_cert_manager.py
index 8ebca884e1..7da1726586 100644
--- a/magnum/tests/unit/common/cert_manager/test_cert_manager.py
+++ b/magnum/tests/unit/common/cert_manager/test_cert_manager.py
@@ -12,7 +12,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
+from unittest import mock
+
 from oslo_config import fixture
 
 from magnum.common import cert_manager
diff --git a/magnum/tests/unit/common/cert_manager/test_local.py b/magnum/tests/unit/common/cert_manager/test_local.py
index 9c44f2b588..d43e0fc411 100644
--- a/magnum/tests/unit/common/cert_manager/test_local.py
+++ b/magnum/tests/unit/common/cert_manager/test_local.py
@@ -12,8 +12,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 import os
+from unittest import mock
 
-import mock
 from oslo_config import cfg
 from oslo_config import fixture as oslo_fixture
 
diff --git a/magnum/tests/unit/common/cert_manager/test_x509keypair_cert_manager.py b/magnum/tests/unit/common/cert_manager/test_x509keypair_cert_manager.py
index c83af8de06..8d1e739352 100644
--- a/magnum/tests/unit/common/cert_manager/test_x509keypair_cert_manager.py
+++ b/magnum/tests/unit/common/cert_manager/test_x509keypair_cert_manager.py
@@ -11,7 +11,7 @@
 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #    License for the specific language governing permissions and limitations
 #    under the License.
-import mock
+from unittest import mock
 
 from magnum.common.cert_manager import x509keypair_cert_manager as x509_cm
 from magnum.common import context
diff --git a/magnum/tests/unit/common/test_clients.py b/magnum/tests/unit/common/test_clients.py
index c437584da3..576bb9acaa 100644
--- a/magnum/tests/unit/common/test_clients.py
+++ b/magnum/tests/unit/common/test_clients.py
@@ -13,9 +13,9 @@
 from barbicanclient.v1 import client as barbicanclient
 from glanceclient import client as glanceclient
 from heatclient import client as heatclient
-import mock
 from neutronclient.v2_0 import client as neutronclient
 from novaclient import client as novaclient
+from unittest import mock
 
 from magnum.common import clients
 from magnum.common import exception
diff --git a/magnum/tests/unit/common/test_docker_utils.py b/magnum/tests/unit/common/test_docker_utils.py
index 671763d9ec..80f073721c 100644
--- a/magnum/tests/unit/common/test_docker_utils.py
+++ b/magnum/tests/unit/common/test_docker_utils.py
@@ -13,7 +13,7 @@
 # under the License.
 
 import docker
-import mock
+from unittest import mock
 
 from magnum.common import docker_utils
 import magnum.conf
diff --git a/magnum/tests/unit/common/test_keystone.py b/magnum/tests/unit/common/test_keystone.py
index 449db0cdc0..4b69f03009 100644
--- a/magnum/tests/unit/common/test_keystone.py
+++ b/magnum/tests/unit/common/test_keystone.py
@@ -10,7 +10,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
+from unittest import mock
+
 from oslo_config import fixture
 
 from keystoneauth1 import exceptions as ka_exception
diff --git a/magnum/tests/unit/common/test_neutron.py b/magnum/tests/unit/common/test_neutron.py
index 6630c2f291..732babc5e9 100644
--- a/magnum/tests/unit/common/test_neutron.py
+++ b/magnum/tests/unit/common/test_neutron.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 magnum.common import exception
 from magnum.common import neutron
diff --git a/magnum/tests/unit/common/test_octavia.py b/magnum/tests/unit/common/test_octavia.py
index 4033bb3cfd..69a76589de 100644
--- a/magnum/tests/unit/common/test_octavia.py
+++ b/magnum/tests/unit/common/test_octavia.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 magnum.common import exception
 from magnum.common import octavia
diff --git a/magnum/tests/unit/common/test_profiler.py b/magnum/tests/unit/common/test_profiler.py
index 5fded8d011..da292b92b8 100644
--- a/magnum/tests/unit/common/test_profiler.py
+++ b/magnum/tests/unit/common/test_profiler.py
@@ -14,7 +14,7 @@
 #    under the License.
 
 import inspect
-import mock
+from unittest import mock
 
 from oslo_config import cfg
 from oslo_utils import importutils
diff --git a/magnum/tests/unit/common/test_rpc.py b/magnum/tests/unit/common/test_rpc.py
index 7414f26592..3cbda2c944 100644
--- a/magnum/tests/unit/common/test_rpc.py
+++ b/magnum/tests/unit/common/test_rpc.py
@@ -13,7 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
+from unittest import mock
+
 import oslo_messaging as messaging
 from oslo_messaging.rpc import dispatcher
 from oslo_serialization import jsonutils
diff --git a/magnum/tests/unit/common/test_service.py b/magnum/tests/unit/common/test_service.py
index 463e0904c9..44bc48ebee 100644
--- a/magnum/tests/unit/common/test_service.py
+++ b/magnum/tests/unit/common/test_service.py
@@ -11,7 +11,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
+from unittest import mock
 
 from oslo_log import log as logging
 
diff --git a/magnum/tests/unit/common/test_urlfetch.py b/magnum/tests/unit/common/test_urlfetch.py
index b65351dfb3..36d835319c 100644
--- a/magnum/tests/unit/common/test_urlfetch.py
+++ b/magnum/tests/unit/common/test_urlfetch.py
@@ -10,8 +10,9 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
 from mock import patch
+from unittest import mock
+
 from oslo_config import cfg
 
 from magnum.common import urlfetch
diff --git a/magnum/tests/unit/common/test_utils.py b/magnum/tests/unit/common/test_utils.py
index 8bfa726034..34d4f99fc4 100644
--- a/magnum/tests/unit/common/test_utils.py
+++ b/magnum/tests/unit/common/test_utils.py
@@ -18,8 +18,8 @@ import os
 import os.path
 import shutil
 import tempfile
+from unittest import mock
 
-import mock
 from oslo_concurrency import processutils
 from oslo_utils import netutils
 
diff --git a/magnum/tests/unit/common/x509/test_operations.py b/magnum/tests/unit/common/x509/test_operations.py
index 32bedfacd2..2ee19cc6ba 100644
--- a/magnum/tests/unit/common/x509/test_operations.py
+++ b/magnum/tests/unit/common/x509/test_operations.py
@@ -14,7 +14,7 @@
 
 from cryptography.hazmat.primitives.asymmetric import rsa
 from cryptography.hazmat.primitives import serialization
-import mock
+from unittest import mock
 
 from magnum.common.x509 import operations
 from magnum.tests import base
diff --git a/magnum/tests/unit/common/x509/test_sign.py b/magnum/tests/unit/common/x509/test_sign.py
index 501ed800a3..7bedd9a850 100644
--- a/magnum/tests/unit/common/x509/test_sign.py
+++ b/magnum/tests/unit/common/x509/test_sign.py
@@ -18,7 +18,8 @@ from cryptography.hazmat.primitives import hashes
 from cryptography.hazmat.primitives import serialization
 from cryptography import x509 as c_x509
 from cryptography.x509.oid import NameOID
-import mock
+from unittest import mock
+
 import six
 
 from magnum.common import exception
diff --git a/magnum/tests/unit/conductor/handlers/common/test_cert_manager.py b/magnum/tests/unit/conductor/handlers/common/test_cert_manager.py
index 8d539477fd..297fa2b52f 100644
--- a/magnum/tests/unit/conductor/handlers/common/test_cert_manager.py
+++ b/magnum/tests/unit/conductor/handlers/common/test_cert_manager.py
@@ -12,7 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
+from unittest import mock
 
 from magnum.common import exception
 from magnum.conductor.handlers.common import cert_manager
diff --git a/magnum/tests/unit/conductor/handlers/common/test_trust_manager.py b/magnum/tests/unit/conductor/handlers/common/test_trust_manager.py
index 3860bb8bbc..2a69ebf9c8 100644
--- a/magnum/tests/unit/conductor/handlers/common/test_trust_manager.py
+++ b/magnum/tests/unit/conductor/handlers/common/test_trust_manager.py
@@ -12,8 +12,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
 from mock import patch
+from unittest import mock
 
 from magnum.common import exception
 from magnum.conductor.handlers.common import trust_manager
diff --git a/magnum/tests/unit/conductor/handlers/test_ca_conductor.py b/magnum/tests/unit/conductor/handlers/test_ca_conductor.py
index 72ae38d517..cce26a9f8c 100644
--- a/magnum/tests/unit/conductor/handlers/test_ca_conductor.py
+++ b/magnum/tests/unit/conductor/handlers/test_ca_conductor.py
@@ -12,7 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
+from unittest import mock
 
 from magnum.conductor.handlers import ca_conductor
 from magnum.tests import base
diff --git a/magnum/tests/unit/conductor/handlers/test_cluster_conductor.py b/magnum/tests/unit/conductor/handlers/test_cluster_conductor.py
index b2046c6714..2573f2743e 100644
--- a/magnum/tests/unit/conductor/handlers/test_cluster_conductor.py
+++ b/magnum/tests/unit/conductor/handlers/test_cluster_conductor.py
@@ -14,10 +14,11 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+from unittest import mock
+
 import six
 
 from heatclient import exc
-import mock
 from mock import patch
 from oslo_service import loopingcall
 from pycadf import cadftaxonomy as taxonomy
diff --git a/magnum/tests/unit/conductor/handlers/test_k8s_cluster_conductor.py b/magnum/tests/unit/conductor/handlers/test_k8s_cluster_conductor.py
index cef7bbff75..bbcd9d335f 100644
--- a/magnum/tests/unit/conductor/handlers/test_k8s_cluster_conductor.py
+++ b/magnum/tests/unit/conductor/handlers/test_k8s_cluster_conductor.py
@@ -12,8 +12,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
 from mock import patch
+from unittest import mock
 
 import magnum.conf
 from magnum.drivers.k8s_coreos_v1 import driver as k8s_coreos_dr
diff --git a/magnum/tests/unit/conductor/handlers/test_mesos_cluster_conductor.py b/magnum/tests/unit/conductor/handlers/test_mesos_cluster_conductor.py
index 5c8b3e9d82..54eb77da3d 100644
--- a/magnum/tests/unit/conductor/handlers/test_mesos_cluster_conductor.py
+++ b/magnum/tests/unit/conductor/handlers/test_mesos_cluster_conductor.py
@@ -12,8 +12,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
 from mock import patch
+from unittest import mock
 
 from magnum.drivers.heat import driver as heat_driver
 from magnum.drivers.mesos_ubuntu_v1 import driver as mesos_dr
diff --git a/magnum/tests/unit/conductor/handlers/test_nodegroup_conductor.py b/magnum/tests/unit/conductor/handlers/test_nodegroup_conductor.py
index 5f87ea3d1f..41fe395901 100644
--- a/magnum/tests/unit/conductor/handlers/test_nodegroup_conductor.py
+++ b/magnum/tests/unit/conductor/handlers/test_nodegroup_conductor.py
@@ -13,8 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
 from mock import patch
+from unittest import mock
 
 from heatclient import exc
 
diff --git a/magnum/tests/unit/conductor/handlers/test_swarm_cluster_conductor.py b/magnum/tests/unit/conductor/handlers/test_swarm_cluster_conductor.py
index 44a1aacac0..34608732e0 100644
--- a/magnum/tests/unit/conductor/handlers/test_swarm_cluster_conductor.py
+++ b/magnum/tests/unit/conductor/handlers/test_swarm_cluster_conductor.py
@@ -12,8 +12,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
 from mock import patch
+from unittest import mock
 
 import magnum.conf
 from magnum.drivers.heat import driver as heat_driver
diff --git a/magnum/tests/unit/conductor/tasks/test_heat_tasks.py b/magnum/tests/unit/conductor/tasks/test_heat_tasks.py
index 973860c9b4..2ac2d070d5 100644
--- a/magnum/tests/unit/conductor/tasks/test_heat_tasks.py
+++ b/magnum/tests/unit/conductor/tasks/test_heat_tasks.py
@@ -12,9 +12,9 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
 from taskflow import engines
 from taskflow.patterns import linear_flow
+from unittest import mock
 
 from magnum.conductor.tasks import heat_tasks
 from magnum.tests import base
diff --git a/magnum/tests/unit/conductor/test_k8s_api.py b/magnum/tests/unit/conductor/test_k8s_api.py
index 7722c76ccf..df4579cce0 100644
--- a/magnum/tests/unit/conductor/test_k8s_api.py
+++ b/magnum/tests/unit/conductor/test_k8s_api.py
@@ -12,7 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
+from unittest import mock
 
 from magnum.tests import base
 
diff --git a/magnum/tests/unit/conductor/test_monitors.py b/magnum/tests/unit/conductor/test_monitors.py
index f1a0ca8126..41c90d94df 100644
--- a/magnum/tests/unit/conductor/test_monitors.py
+++ b/magnum/tests/unit/conductor/test_monitors.py
@@ -14,8 +14,8 @@
 # limitations under the License.
 
 from collections import namedtuple
+from unittest import mock
 
-import mock
 from oslo_serialization import jsonutils
 
 from magnum.common import exception
diff --git a/magnum/tests/unit/conductor/test_rpcapi.py b/magnum/tests/unit/conductor/test_rpcapi.py
index 5af75576ba..e0d3038bac 100644
--- a/magnum/tests/unit/conductor/test_rpcapi.py
+++ b/magnum/tests/unit/conductor/test_rpcapi.py
@@ -14,8 +14,8 @@ Unit Tests for :py:class:`magnum.conductor.rpcapi.API`.
 """
 
 import copy
+from unittest import mock
 
-import mock
 
 from magnum.conductor import api as conductor_rpcapi
 from magnum import objects
diff --git a/magnum/tests/unit/conductor/test_scale_manager.py b/magnum/tests/unit/conductor/test_scale_manager.py
index cd647d99c2..cfe4309908 100644
--- a/magnum/tests/unit/conductor/test_scale_manager.py
+++ b/magnum/tests/unit/conductor/test_scale_manager.py
@@ -12,7 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
+from unittest import mock
 
 from magnum.common import exception
 from magnum.conductor import scale_manager
diff --git a/magnum/tests/unit/conductor/test_utils.py b/magnum/tests/unit/conductor/test_utils.py
index 95e712b421..7483d36eea 100644
--- a/magnum/tests/unit/conductor/test_utils.py
+++ b/magnum/tests/unit/conductor/test_utils.py
@@ -12,8 +12,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
 from mock import patch
+from unittest import mock
 
 from magnum.conductor import utils
 from magnum import objects
diff --git a/magnum/tests/unit/conf/test_conf.py b/magnum/tests/unit/conf/test_conf.py
index 0ee33a8472..58cbe993df 100644
--- a/magnum/tests/unit/conf/test_conf.py
+++ b/magnum/tests/unit/conf/test_conf.py
@@ -13,7 +13,8 @@
 # under the License.
 
 import collections
-import mock
+from unittest import mock
+
 from oslo_config import cfg
 import six
 
diff --git a/magnum/tests/unit/drivers/test_heat_driver.py b/magnum/tests/unit/drivers/test_heat_driver.py
index 04d46fd231..ed63e8246b 100644
--- a/magnum/tests/unit/drivers/test_heat_driver.py
+++ b/magnum/tests/unit/drivers/test_heat_driver.py
@@ -10,10 +10,11 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
 from mock import patch
+from unittest import mock
 
 from heatclient import exc as heatexc
+from oslo_utils import uuidutils
 
 import magnum.conf
 from magnum.drivers.heat import driver as heat_driver
@@ -87,7 +88,8 @@ class TestHeatPoller(base.TestCase):
         if default_stack_status is None:
             default_stack_status = cluster_status.CREATE_COMPLETE
 
-        cluster = mock.MagicMock(nodegroups=list())
+        cluster = mock.MagicMock(nodegroups=list(),
+                                 uuid=uuidutils.generate_uuid())
 
         def_worker = self._create_nodegroup(cluster, 'worker_ng', 'stack1',
                                             name='worker_ng', role='worker',
diff --git a/magnum/tests/unit/drivers/test_template_definition.py b/magnum/tests/unit/drivers/test_template_definition.py
index a2b2a620fe..15adfd2078 100644
--- a/magnum/tests/unit/drivers/test_template_definition.py
+++ b/magnum/tests/unit/drivers/test_template_definition.py
@@ -13,8 +13,9 @@
 # under the License.
 
 import abc
-import mock
 from neutronclient.common import exceptions as n_exception
+from unittest import mock
+
 import six
 
 from magnum.common import exception
diff --git a/magnum/tests/unit/objects/test_cluster.py b/magnum/tests/unit/objects/test_cluster.py
index b4cd7ac6e2..10abab59d2 100644
--- a/magnum/tests/unit/objects/test_cluster.py
+++ b/magnum/tests/unit/objects/test_cluster.py
@@ -13,7 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
+from unittest import mock
+
 from oslo_utils import uuidutils
 from testtools.matchers import HasLength
 
diff --git a/magnum/tests/unit/objects/test_cluster_template.py b/magnum/tests/unit/objects/test_cluster_template.py
index 7760ad6169..dc868b5772 100644
--- a/magnum/tests/unit/objects/test_cluster_template.py
+++ b/magnum/tests/unit/objects/test_cluster_template.py
@@ -13,7 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
+from unittest import mock
+
 from oslo_utils import uuidutils
 from testtools.matchers import HasLength
 
diff --git a/magnum/tests/unit/objects/test_federation.py b/magnum/tests/unit/objects/test_federation.py
index 6183786449..b744a1393b 100644
--- a/magnum/tests/unit/objects/test_federation.py
+++ b/magnum/tests/unit/objects/test_federation.py
@@ -10,7 +10,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
+from unittest import mock
+
 from oslo_utils import uuidutils
 from testtools.matchers import HasLength
 
diff --git a/magnum/tests/unit/objects/test_magnum_service.py b/magnum/tests/unit/objects/test_magnum_service.py
index 2b94032e2e..2dbf1746a5 100644
--- a/magnum/tests/unit/objects/test_magnum_service.py
+++ b/magnum/tests/unit/objects/test_magnum_service.py
@@ -10,7 +10,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
+from unittest import mock
 
 from magnum import objects
 from magnum.tests.unit.db import base
diff --git a/magnum/tests/unit/objects/test_nodegroup.py b/magnum/tests/unit/objects/test_nodegroup.py
index e1aedbbb64..2582b34475 100644
--- a/magnum/tests/unit/objects/test_nodegroup.py
+++ b/magnum/tests/unit/objects/test_nodegroup.py
@@ -13,7 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
+from unittest import mock
+
 from oslo_utils import uuidutils
 from testtools.matchers import HasLength
 
diff --git a/magnum/tests/unit/objects/test_objects.py b/magnum/tests/unit/objects/test_objects.py
index 5aa0eceed1..bd05ab1de6 100644
--- a/magnum/tests/unit/objects/test_objects.py
+++ b/magnum/tests/unit/objects/test_objects.py
@@ -14,8 +14,8 @@
 
 import datetime
 import gettext
+from unittest import mock
 
-import mock
 from oslo_versionedobjects import exception as object_exception
 from oslo_versionedobjects import fields
 from oslo_versionedobjects import fixture
diff --git a/magnum/tests/unit/objects/test_x509keypair.py b/magnum/tests/unit/objects/test_x509keypair.py
index 9d5909ce7e..5342c11d52 100644
--- a/magnum/tests/unit/objects/test_x509keypair.py
+++ b/magnum/tests/unit/objects/test_x509keypair.py
@@ -13,7 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
+from unittest import mock
+
 from oslo_utils import uuidutils
 from testtools.matchers import HasLength
 
diff --git a/magnum/tests/unit/service/test_periodic.py b/magnum/tests/unit/service/test_periodic.py
index 7cef0d2218..eac1e5b7f2 100644
--- a/magnum/tests/unit/service/test_periodic.py
+++ b/magnum/tests/unit/service/test_periodic.py
@@ -12,7 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
+from unittest import mock
 
 from oslo_utils import uuidutils
 
diff --git a/magnum/tests/unit/servicegroup/test_magnum_service.py b/magnum/tests/unit/servicegroup/test_magnum_service.py
index 161603addd..7a513e7ebe 100644
--- a/magnum/tests/unit/servicegroup/test_magnum_service.py
+++ b/magnum/tests/unit/servicegroup/test_magnum_service.py
@@ -12,7 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
+from unittest import mock
 
 from magnum.common.rpc_service import CONF
 from magnum import objects
diff --git a/magnum/tests/unit/test_hacking.py b/magnum/tests/unit/test_hacking.py
index 6f56041caa..da10937776 100644
--- a/magnum/tests/unit/test_hacking.py
+++ b/magnum/tests/unit/test_hacking.py
@@ -13,8 +13,8 @@
 #    under the License.
 
 import textwrap
+from unittest import mock
 
-import mock
 import pycodestyle
 
 from magnum.hacking import checks
diff --git a/test-requirements.txt b/test-requirements.txt
index 952e0b8339..dbc0f8a2a0 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -11,7 +11,6 @@ coverage!=4.4,>=4.0 # Apache-2.0
 doc8>=0.6.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
 hacking>=3.0,<3.1.0 # Apache-2.0
-mock>=2.0.0 # BSD
 oslotest>=3.2.0 # Apache-2.0
 osprofiler>=1.4.0 # Apache-2.0
 os-testr>=1.0.0 # Apache-2.0