diff --git a/tests/unit/gapic/monitoring_v3/test_alert_policy_service.py b/tests/unit/gapic/monitoring_v3/test_alert_policy_service.py
index bb4c978a..2ee874ac 100644
--- a/tests/unit/gapic/monitoring_v3/test_alert_policy_service.py
+++ b/tests/unit/gapic/monitoring_v3/test_alert_policy_service.py
@@ -27,7 +27,7 @@
 import math
 import pytest
 from proto.marshal.rules.dates import DurationRule, TimestampRule
-
+from proto.marshal.rules import wrappers
 
 from google.api_core import client_options
 from google.api_core import exceptions as core_exceptions
diff --git a/tests/unit/gapic/monitoring_v3/test_group_service.py b/tests/unit/gapic/monitoring_v3/test_group_service.py
index af526386..6c6af3be 100644
--- a/tests/unit/gapic/monitoring_v3/test_group_service.py
+++ b/tests/unit/gapic/monitoring_v3/test_group_service.py
@@ -27,7 +27,7 @@
 import math
 import pytest
 from proto.marshal.rules.dates import DurationRule, TimestampRule
-
+from proto.marshal.rules import wrappers
 
 from google.api import monitored_resource_pb2  # type: ignore
 from google.api_core import client_options
diff --git a/tests/unit/gapic/monitoring_v3/test_metric_service.py b/tests/unit/gapic/monitoring_v3/test_metric_service.py
index 05e92a57..6263293d 100644
--- a/tests/unit/gapic/monitoring_v3/test_metric_service.py
+++ b/tests/unit/gapic/monitoring_v3/test_metric_service.py
@@ -27,7 +27,7 @@
 import math
 import pytest
 from proto.marshal.rules.dates import DurationRule, TimestampRule
-
+from proto.marshal.rules import wrappers
 
 from google.api import distribution_pb2  # type: ignore
 from google.api import label_pb2  # type: ignore
diff --git a/tests/unit/gapic/monitoring_v3/test_notification_channel_service.py b/tests/unit/gapic/monitoring_v3/test_notification_channel_service.py
index 83c0ec8e..bce38cdf 100644
--- a/tests/unit/gapic/monitoring_v3/test_notification_channel_service.py
+++ b/tests/unit/gapic/monitoring_v3/test_notification_channel_service.py
@@ -27,7 +27,7 @@
 import math
 import pytest
 from proto.marshal.rules.dates import DurationRule, TimestampRule
-
+from proto.marshal.rules import wrappers
 
 from google.api import label_pb2  # type: ignore
 from google.api import launch_stage_pb2  # type: ignore
diff --git a/tests/unit/gapic/monitoring_v3/test_query_service.py b/tests/unit/gapic/monitoring_v3/test_query_service.py
index e5c1bc5f..6303cf4f 100644
--- a/tests/unit/gapic/monitoring_v3/test_query_service.py
+++ b/tests/unit/gapic/monitoring_v3/test_query_service.py
@@ -27,7 +27,7 @@
 import math
 import pytest
 from proto.marshal.rules.dates import DurationRule, TimestampRule
-
+from proto.marshal.rules import wrappers
 
 from google.api_core import client_options
 from google.api_core import exceptions as core_exceptions
diff --git a/tests/unit/gapic/monitoring_v3/test_service_monitoring_service.py b/tests/unit/gapic/monitoring_v3/test_service_monitoring_service.py
index efbd12b8..ac993261 100644
--- a/tests/unit/gapic/monitoring_v3/test_service_monitoring_service.py
+++ b/tests/unit/gapic/monitoring_v3/test_service_monitoring_service.py
@@ -27,7 +27,7 @@
 import math
 import pytest
 from proto.marshal.rules.dates import DurationRule, TimestampRule
-
+from proto.marshal.rules import wrappers
 
 from google.api_core import client_options
 from google.api_core import exceptions as core_exceptions
diff --git a/tests/unit/gapic/monitoring_v3/test_uptime_check_service.py b/tests/unit/gapic/monitoring_v3/test_uptime_check_service.py
index 169cb28e..d307a57e 100644
--- a/tests/unit/gapic/monitoring_v3/test_uptime_check_service.py
+++ b/tests/unit/gapic/monitoring_v3/test_uptime_check_service.py
@@ -27,7 +27,7 @@
 import math
 import pytest
 from proto.marshal.rules.dates import DurationRule, TimestampRule
-
+from proto.marshal.rules import wrappers
 
 from google.api import monitored_resource_pb2  # type: ignore
 from google.api_core import client_options