Use mock from the stdlib. (#9772)

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/server_notices/test_resource_limits_server_notices.py b/tests/server_notices/test_resource_limits_server_notices.py

index d40d65b06a..450b4ec710 100644
--- a/tests/server_notices/test_resource_limits_server_notices.py
+++ b/tests/server_notices/test_resource_limits_server_notices.py
@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from mock import Mock
+from unittest.mock import Mock
 
 from twisted.internet import defer