diff --git a/tests/test_cognitoidentity/test_cognitoidentity.py b/tests/test_cognitoidentity/test_cognitoidentity.py
index 2b81e553e..9b36936f2 100644
--- a/tests/test_cognitoidentity/test_cognitoidentity.py
+++ b/tests/test_cognitoidentity/test_cognitoidentity.py
@@ -1,5 +1,5 @@
 import boto3
-import mock
+from unittest import mock
 import sure  # noqa # pylint: disable=unused-import
 from botocore.exceptions import ClientError
 from datetime import datetime
diff --git a/tests/test_cognitoidp/test_cognitoidp.py b/tests/test_cognitoidp/test_cognitoidp.py
index c2b5b4d85..4962eae73 100644
--- a/tests/test_cognitoidp/test_cognitoidp.py
+++ b/tests/test_cognitoidp/test_cognitoidp.py
@@ -5,7 +5,7 @@ import os
 import random
 import re
 
-import mock
+from unittest import mock
 import moto.cognitoidp.models
 import requests
 import hmac
diff --git a/tests/test_core/test_mock_regions.py b/tests/test_core/test_mock_regions.py
index 8123ad7cd..e6af84549 100644
--- a/tests/test_core/test_mock_regions.py
+++ b/tests/test_core/test_mock_regions.py
@@ -1,5 +1,5 @@
 import boto3
-import mock
+from unittest import mock
 import os
 import pytest
 from moto import mock_dynamodb, mock_sns, settings
diff --git a/tests/test_core/test_settings.py b/tests/test_core/test_settings.py
index b720e3d86..47715b1c0 100644
--- a/tests/test_core/test_settings.py
+++ b/tests/test_core/test_settings.py
@@ -1,5 +1,5 @@
 import os
-import mock
+from unittest import mock
 import pytest
 import sure  # noqa # pylint: disable=unused-import
 
diff --git a/tests/test_ecs/test_ecs_boto3.py b/tests/test_ecs/test_ecs_boto3.py
index 4c9b259b5..dc7127112 100644
--- a/tests/test_ecs/test_ecs_boto3.py
+++ b/tests/test_ecs/test_ecs_boto3.py
@@ -2,7 +2,7 @@ from datetime import datetime
 
 from botocore.exceptions import ClientError
 import boto3
-import mock
+from unittest import mock
 import sure  # noqa # pylint: disable=unused-import
 import json
 import os
diff --git a/tests/test_eks/test_eks.py b/tests/test_eks/test_eks.py
index 501478d44..00d6eee6b 100644
--- a/tests/test_eks/test_eks.py
+++ b/tests/test_eks/test_eks.py
@@ -2,7 +2,7 @@ from copy import deepcopy
 from unittest import SkipTest
 
 import boto3
-import mock
+from unittest import mock
 import pytest
 import sure  # noqa # pylint: disable=unused-import
 from botocore.exceptions import ClientError