diff --git a/google/cloud/bigquery_datatransfer_v1/services/data_transfer_service/transports/__init__.py b/google/cloud/bigquery_datatransfer_v1/services/data_transfer_service/transports/__init__.py
index 2b71d0f3..097e5854 100644
--- a/google/cloud/bigquery_datatransfer_v1/services/data_transfer_service/transports/__init__.py
+++ b/google/cloud/bigquery_datatransfer_v1/services/data_transfer_service/transports/__init__.py
@@ -30,7 +30,6 @@
 _transport_registry["grpc"] = DataTransferServiceGrpcTransport
 _transport_registry["grpc_asyncio"] = DataTransferServiceGrpcAsyncIOTransport
 
-
 __all__ = (
     "DataTransferServiceTransport",
     "DataTransferServiceGrpcTransport",
diff --git a/google/cloud/bigquery_datatransfer_v1/services/data_transfer_service/transports/grpc.py b/google/cloud/bigquery_datatransfer_v1/services/data_transfer_service/transports/grpc.py
index 442cdd27..12ce7f93 100644
--- a/google/cloud/bigquery_datatransfer_v1/services/data_transfer_service/transports/grpc.py
+++ b/google/cloud/bigquery_datatransfer_v1/services/data_transfer_service/transports/grpc.py
@@ -151,6 +151,10 @@ def __init__(
                 ssl_credentials=ssl_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             self._ssl_channel_credentials = ssl_credentials
         else:
@@ -169,6 +173,10 @@ def __init__(
                 ssl_credentials=ssl_channel_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
 
         self._stubs = {}  # type: Dict[str, Callable]
@@ -195,7 +203,7 @@ def create_channel(
     ) -> grpc.Channel:
         """Create and return a gRPC channel object.
         Args:
-            address (Optionsl[str]): The host for the channel to use.
+            address (Optional[str]): The host for the channel to use.
             credentials (Optional[~.Credentials]): The
                 authorization credentials to attach to requests. These
                 credentials identify this application to the service. If
diff --git a/google/cloud/bigquery_datatransfer_v1/services/data_transfer_service/transports/grpc_asyncio.py b/google/cloud/bigquery_datatransfer_v1/services/data_transfer_service/transports/grpc_asyncio.py
index a65ac425..41eeb000 100644
--- a/google/cloud/bigquery_datatransfer_v1/services/data_transfer_service/transports/grpc_asyncio.py
+++ b/google/cloud/bigquery_datatransfer_v1/services/data_transfer_service/transports/grpc_asyncio.py
@@ -196,6 +196,10 @@ def __init__(
                 ssl_credentials=ssl_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             self._ssl_channel_credentials = ssl_credentials
         else:
@@ -214,6 +218,10 @@ def __init__(
                 ssl_credentials=ssl_channel_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
 
         # Run the base constructor.
diff --git a/google/cloud/bigquery_datatransfer_v1/types/__init__.py b/google/cloud/bigquery_datatransfer_v1/types/__init__.py
index c4f07ee6..f793415b 100644
--- a/google/cloud/bigquery_datatransfer_v1/types/__init__.py
+++ b/google/cloud/bigquery_datatransfer_v1/types/__init__.py
@@ -21,6 +21,8 @@
     TransferConfig,
     TransferRun,
     TransferMessage,
+    TransferType,
+    TransferState,
 )
 from .datatransfer import (
     DataSourceParameter,
@@ -48,13 +50,14 @@
     StartManualTransferRunsResponse,
 )
 
-
 __all__ = (
     "EmailPreferences",
     "ScheduleOptions",
     "TransferConfig",
     "TransferRun",
     "TransferMessage",
+    "TransferType",
+    "TransferState",
     "DataSourceParameter",
     "DataSource",
     "GetDataSourceRequest",
diff --git a/synth.metadata b/synth.metadata
index b02e1f7f..5810770d 100644
--- a/synth.metadata
+++ b/synth.metadata
@@ -4,15 +4,15 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/python-bigquery-datatransfer.git",
-        "sha": "3fb982cc0d4df052495b267f2a7bd3e1c3ea1683"
+        "sha": "af0406eedac1dc8c663b5c8f67f56255caeea2fa"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "3f87da2ed1ddc3566ef0810c4fc06a2682cc9f5f",
-        "internalRef": "343022252"
+        "sha": "dd372aa22ded7a8ba6f0e03a80e06358a3fa0907",
+        "internalRef": "347055288"
       }
     },
     {
diff --git a/tests/unit/gapic/bigquery_datatransfer_v1/test_data_transfer_service.py b/tests/unit/gapic/bigquery_datatransfer_v1/test_data_transfer_service.py
index 1596cfad..fafbdc5d 100644
--- a/tests/unit/gapic/bigquery_datatransfer_v1/test_data_transfer_service.py
+++ b/tests/unit/gapic/bigquery_datatransfer_v1/test_data_transfer_service.py
@@ -4588,6 +4588,10 @@ def test_data_transfer_service_transport_channel_mtls_with_client_cert_source(
                 scopes=("https://www.googleapis.com/auth/cloud-platform",),
                 ssl_credentials=mock_ssl_cred,
                 quota_project_id=None,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             assert transport.grpc_channel == mock_grpc_channel
             assert transport._ssl_channel_credentials == mock_ssl_cred
@@ -4629,6 +4633,10 @@ def test_data_transfer_service_transport_channel_mtls_with_adc(transport_class):
                 scopes=("https://www.googleapis.com/auth/cloud-platform",),
                 ssl_credentials=mock_ssl_cred,
                 quota_project_id=None,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             assert transport.grpc_channel == mock_grpc_channel