diff --git a/kmip/tests/unit/core/objects/test_credentials.py b/kmip/tests/unit/core/objects/test_credentials.py
index 9ecd2e037..8b1d3a84d 100644
--- a/kmip/tests/unit/core/objects/test_credentials.py
+++ b/kmip/tests/unit/core/objects/test_credentials.py
@@ -14,7 +14,7 @@
 # under the License.
 
 import enum
-import mock
+from unittest import mock
 import testtools
 
 from kmip import enums
diff --git a/kmip/tests/unit/core/test_config_helper.py b/kmip/tests/unit/core/test_config_helper.py
index 768659991..ceec5718a 100644
--- a/kmip/tests/unit/core/test_config_helper.py
+++ b/kmip/tests/unit/core/test_config_helper.py
@@ -19,8 +19,7 @@
     import ConfigParser as configparser
 
 from testtools import TestCase
-from mock import MagicMock
-from mock import Mock
+from unittest.mock import MagicMock, Mock
 
 from kmip.core.config_helper import ConfigHelper
 
diff --git a/kmip/tests/unit/pie/test_client.py b/kmip/tests/unit/pie/test_client.py
index 565d4f404..ee0a16aad 100644
--- a/kmip/tests/unit/pie/test_client.py
+++ b/kmip/tests/unit/pie/test_client.py
@@ -13,7 +13,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
+from unittest import mock
 import six
 import ssl
 import testtools
diff --git a/kmip/tests/unit/services/server/auth/test_slugs.py b/kmip/tests/unit/services/server/auth/test_slugs.py
index 49fa0c99b..d5489d0e2 100644
--- a/kmip/tests/unit/services/server/auth/test_slugs.py
+++ b/kmip/tests/unit/services/server/auth/test_slugs.py
@@ -13,7 +13,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
+from unittest import mock
 import requests
 import testtools
 
diff --git a/kmip/tests/unit/services/server/auth/test_utils.py b/kmip/tests/unit/services/server/auth/test_utils.py
index 2f96c2266..950e8550b 100644
--- a/kmip/tests/unit/services/server/auth/test_utils.py
+++ b/kmip/tests/unit/services/server/auth/test_utils.py
@@ -19,7 +19,7 @@
 from cryptography.hazmat.primitives.asymmetric import rsa
 
 import datetime
-import mock
+from unittest import mock
 import ssl
 import testtools
 
diff --git a/kmip/tests/unit/services/server/crypto/test_engine.py b/kmip/tests/unit/services/server/crypto/test_engine.py
index edb528323..aefed9dd9 100644
--- a/kmip/tests/unit/services/server/crypto/test_engine.py
+++ b/kmip/tests/unit/services/server/crypto/test_engine.py
@@ -13,7 +13,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import mock
+from unittest import mock
 import pytest
 import testtools
 
diff --git a/kmip/tests/unit/services/server/test_config.py b/kmip/tests/unit/services/server/test_config.py
index e4b975082..ab213eceb 100644
--- a/kmip/tests/unit/services/server/test_config.py
+++ b/kmip/tests/unit/services/server/test_config.py
@@ -14,7 +14,7 @@
 # under the License.
 
 import logging
-import mock
+from unittest import mock
 
 import six
 from six.moves import configparser
diff --git a/kmip/tests/unit/services/server/test_engine.py b/kmip/tests/unit/services/server/test_engine.py
index 84deb436c..8a32a88f4 100644
--- a/kmip/tests/unit/services/server/test_engine.py
+++ b/kmip/tests/unit/services/server/test_engine.py
@@ -14,7 +14,7 @@
 # under the License.
 
 import six
-import mock
+from unittest import mock
 import shutil
 import sqlalchemy
 
diff --git a/kmip/tests/unit/services/server/test_monitor.py b/kmip/tests/unit/services/server/test_monitor.py
index 7f4c4357c..997055add 100644
--- a/kmip/tests/unit/services/server/test_monitor.py
+++ b/kmip/tests/unit/services/server/test_monitor.py
@@ -14,7 +14,7 @@
 # under the License.
 
 import logging
-import mock
+from unittest import mock
 import multiprocessing
 import os
 import shutil
diff --git a/kmip/tests/unit/services/server/test_server.py b/kmip/tests/unit/services/server/test_server.py
index 66ec8a36c..106556195 100644
--- a/kmip/tests/unit/services/server/test_server.py
+++ b/kmip/tests/unit/services/server/test_server.py
@@ -14,15 +14,10 @@
 # under the License.
 
 import logging
-
-try:
-    import unittest.mock as mock
-except Exception:
-    import mock
-
 import signal
 import socket
 import testtools
+import unittest.mock as mock
 
 from kmip.core import exceptions
 from kmip.services import auth
diff --git a/kmip/tests/unit/services/server/test_session.py b/kmip/tests/unit/services/server/test_session.py
index b6661c5b9..9ccd67d8d 100644
--- a/kmip/tests/unit/services/server/test_session.py
+++ b/kmip/tests/unit/services/server/test_session.py
@@ -20,7 +20,7 @@
 
 
 import datetime
-import mock
+from unittest import mock
 import socket
 import testtools
 import time
diff --git a/kmip/tests/unit/services/test_kmip_client.py b/kmip/tests/unit/services/test_kmip_client.py
index fa13a2046..7c97ae47d 100644
--- a/kmip/tests/unit/services/test_kmip_client.py
+++ b/kmip/tests/unit/services/test_kmip_client.py
@@ -66,7 +66,7 @@
 from kmip.services.results import QueryResult
 from kmip.services.results import RekeyKeyPairResult
 
-import mock
+from unittest import mock
 import os
 import socket
 import ssl
diff --git a/kmip/tests/unit/services/test_kmip_protocol.py b/kmip/tests/unit/services/test_kmip_protocol.py
index e84e43a5e..0ba6850e3 100644
--- a/kmip/tests/unit/services/test_kmip_protocol.py
+++ b/kmip/tests/unit/services/test_kmip_protocol.py
@@ -13,7 +13,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from mock import call, MagicMock
+from unittest.mock import call, MagicMock
 from testtools import TestCase
 
 import binascii
diff --git a/test-requirements.txt b/test-requirements.txt
index 1ab6197d6..c20669c3f 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -3,7 +3,6 @@ pytest
 flake8
 testtools
 fixtures
-mock
 slugs
 sphinx
 PyYAML