diff --git a/doc/requirements.txt b/doc/requirements.txt
index a34629d9..0a923db5 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -12,4 +12,3 @@ sphinx!=1.6.6,!=1.6.7,!=2.1.0,>=1.6.2;python_version>='3.4' # BSD
 sphinxcontrib-apidoc>=0.2.0  # BSD
 
 # NOTE: The following are required as horizon.test.settings loads it.
-mock>=2.0.0 # BSD
diff --git a/magnum_ui/test/api_tests/test_rest_api.py b/magnum_ui/test/api_tests/test_rest_api.py
index e4c9a7a4..dae7c86e 100644
--- a/magnum_ui/test/api_tests/test_rest_api.py
+++ b/magnum_ui/test/api_tests/test_rest_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_serialization import jsonutils
 
diff --git a/magnum_ui/test/helpers.py b/magnum_ui/test/helpers.py
index a1638ad8..fdc8b0a7 100644
--- a/magnum_ui/test/helpers.py
+++ b/magnum_ui/test/helpers.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_ui import api
 from magnum_ui.test import test_data
diff --git a/test-requirements.txt b/test-requirements.txt
index d44de532..ffcbd1fe 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -9,7 +9,6 @@
 # Hacking should appear first in case something else depends on pep8
 hacking>=1.1.0,<1.2.0 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
-mock>=2.0.0 # BSD
 nodeenv>=0.9.4 # BSD
 pytest>=5.3.5 # MIT
 selenium>=2.50.1 # Apache-2.0