diff -upr google-auth-oauthlib-0.5.1.orig/tests/unit/test_flow.py google-auth-oauthlib-0.5.1/tests/unit/test_flow.py
--- google-auth-oauthlib-0.5.1.orig/tests/unit/test_flow.py	2022-06-08 13:49:08.899236362 +0200
+++ google-auth-oauthlib-0.5.1/tests/unit/test_flow.py	2022-06-08 13:49:08.903236386 +0200
@@ -21,7 +21,7 @@ import re
 import random
 import socket
 
-import mock
+from unittest import mock
 import pytest
 import requests
 import urllib
diff -upr google-auth-oauthlib-0.5.1.orig/tests/unit/test_helpers.py google-auth-oauthlib-0.5.1/tests/unit/test_helpers.py
--- google-auth-oauthlib-0.5.1.orig/tests/unit/test_helpers.py	2022-06-08 13:49:08.899236362 +0200
+++ google-auth-oauthlib-0.5.1/tests/unit/test_helpers.py	2022-06-08 13:49:08.903236386 +0200
@@ -16,7 +16,7 @@ import datetime
 import json
 import os
 
-import mock
+from unittest import mock
 import pytest
 
 from google_auth_oauthlib import helpers
diff -upr google-auth-oauthlib-0.5.1.orig/tests/unit/test_interactive.py google-auth-oauthlib-0.5.1/tests/unit/test_interactive.py
--- google-auth-oauthlib-0.5.1.orig/tests/unit/test_interactive.py	2022-06-08 13:49:08.899236362 +0200
+++ google-auth-oauthlib-0.5.1/tests/unit/test_interactive.py	2022-06-08 13:49:08.903236386 +0200
@@ -14,7 +14,7 @@
 
 import socket
 
-import mock
+from unittest import mock
 import pytest
 
 
diff -upr google-auth-oauthlib-0.5.1.orig/tests/unit/test_tool.py google-auth-oauthlib-0.5.1/tests/unit/test_tool.py
--- google-auth-oauthlib-0.5.1.orig/tests/unit/test_tool.py	2022-06-08 13:49:08.899236362 +0200
+++ google-auth-oauthlib-0.5.1/tests/unit/test_tool.py	2022-06-08 13:49:08.903236386 +0200
@@ -19,7 +19,7 @@ import tempfile
 
 import click.testing
 import google.oauth2.credentials
-import mock
+from unittest import mock
 import pytest
 
 import google_auth_oauthlib.flow