diff --git a/packages/google-cloud-service-directory/tests/unit/gapic/servicedirectory_v1/test_lookup_service.py b/packages/google-cloud-service-directory/tests/unit/gapic/servicedirectory_v1/test_lookup_service.py
index e308d4dbf192..13ce6e1ed440 100644
--- a/packages/google-cloud-service-directory/tests/unit/gapic/servicedirectory_v1/test_lookup_service.py
+++ b/packages/google-cloud-service-directory/tests/unit/gapic/servicedirectory_v1/test_lookup_service.py
@@ -33,6 +33,7 @@
 from google.oauth2 import service_account
 import grpc
 from grpc.experimental import aio
+from proto.marshal.rules import wrappers
 from proto.marshal.rules.dates import DurationRule, TimestampRule
 import pytest
 
diff --git a/packages/google-cloud-service-directory/tests/unit/gapic/servicedirectory_v1/test_registration_service.py b/packages/google-cloud-service-directory/tests/unit/gapic/servicedirectory_v1/test_registration_service.py
index e63bb7832316..1ec254e1ea56 100644
--- a/packages/google-cloud-service-directory/tests/unit/gapic/servicedirectory_v1/test_registration_service.py
+++ b/packages/google-cloud-service-directory/tests/unit/gapic/servicedirectory_v1/test_registration_service.py
@@ -38,6 +38,7 @@
 from google.type import expr_pb2  # type: ignore
 import grpc
 from grpc.experimental import aio
+from proto.marshal.rules import wrappers
 from proto.marshal.rules.dates import DurationRule, TimestampRule
 import pytest
 
diff --git a/packages/google-cloud-service-directory/tests/unit/gapic/servicedirectory_v1beta1/test_lookup_service.py b/packages/google-cloud-service-directory/tests/unit/gapic/servicedirectory_v1beta1/test_lookup_service.py
index c48ad127cd9c..d66d198aaf6b 100644
--- a/packages/google-cloud-service-directory/tests/unit/gapic/servicedirectory_v1beta1/test_lookup_service.py
+++ b/packages/google-cloud-service-directory/tests/unit/gapic/servicedirectory_v1beta1/test_lookup_service.py
@@ -33,6 +33,7 @@
 from google.oauth2 import service_account
 import grpc
 from grpc.experimental import aio
+from proto.marshal.rules import wrappers
 from proto.marshal.rules.dates import DurationRule, TimestampRule
 import pytest
 
diff --git a/packages/google-cloud-service-directory/tests/unit/gapic/servicedirectory_v1beta1/test_registration_service.py b/packages/google-cloud-service-directory/tests/unit/gapic/servicedirectory_v1beta1/test_registration_service.py
index e11d1e32b092..2bf9f2f85d12 100644
--- a/packages/google-cloud-service-directory/tests/unit/gapic/servicedirectory_v1beta1/test_registration_service.py
+++ b/packages/google-cloud-service-directory/tests/unit/gapic/servicedirectory_v1beta1/test_registration_service.py
@@ -39,6 +39,7 @@
 from google.type import expr_pb2  # type: ignore
 import grpc
 from grpc.experimental import aio
+from proto.marshal.rules import wrappers
 from proto.marshal.rules.dates import DurationRule, TimestampRule
 import pytest