diff --git a/.github/release-please.yml b/.github/release-please.yml
index 6def37a..e9a4f00 100644
--- a/.github/release-please.yml
+++ b/.github/release-please.yml
@@ -1,5 +1,6 @@
 releaseType: python
 handleGHRelease: true
+manifest: true
 # NOTE: this section is generated by synthtool.languages.python
 # See https://github.com/googleapis/synthtool/blob/master/synthtool/languages/python.py
 branches:
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
new file mode 100644
index 0000000..b7298f8
--- /dev/null
+++ b/.release-please-manifest.json
@@ -0,0 +1,3 @@
+{
+  ".": "1.2.3"
+}
diff --git a/docs/essential_contacts_v1/types.rst b/docs/essential_contacts_v1/types.rst
index 0e1fac5..75b751d 100644
--- a/docs/essential_contacts_v1/types.rst
+++ b/docs/essential_contacts_v1/types.rst
@@ -3,5 +3,4 @@ Types for Google Cloud Essential Contacts v1 API
 
 .. automodule:: google.cloud.essential_contacts_v1.types
     :members:
-    :undoc-members:
     :show-inheritance:
diff --git a/google/cloud/essential_contacts/__init__.py b/google/cloud/essential_contacts/__init__.py
index e65e530..9d61c8b 100644
--- a/google/cloud/essential_contacts/__init__.py
+++ b/google/cloud/essential_contacts/__init__.py
@@ -13,6 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+from google.cloud.essential_contacts import gapic_version as package_version
+
+__version__ = package_version.__version__
+
 
 from google.cloud.essential_contacts_v1.services.essential_contacts_service.async_client import (
     EssentialContactsServiceAsyncClient,
diff --git a/google/cloud/essential_contacts/gapic_version.py b/google/cloud/essential_contacts/gapic_version.py
new file mode 100644
index 0000000..d92b8a9
--- /dev/null
+++ b/google/cloud/essential_contacts/gapic_version.py
@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+__version__ = "1.2.3"  # {x-release-please-version}
diff --git a/google/cloud/essential_contacts_v1/__init__.py b/google/cloud/essential_contacts_v1/__init__.py
index 8bb40eb..85550fd 100644
--- a/google/cloud/essential_contacts_v1/__init__.py
+++ b/google/cloud/essential_contacts_v1/__init__.py
@@ -13,6 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+from google.cloud.essential_contacts import gapic_version as package_version
+
+__version__ = package_version.__version__
+
 
 from .services.essential_contacts_service import (
     EssentialContactsServiceAsyncClient,
diff --git a/google/cloud/essential_contacts_v1/services/essential_contacts_service/async_client.py b/google/cloud/essential_contacts_v1/services/essential_contacts_service/async_client.py
index d5f052d..3878418 100644
--- a/google/cloud/essential_contacts_v1/services/essential_contacts_service/async_client.py
+++ b/google/cloud/essential_contacts_v1/services/essential_contacts_service/async_client.py
@@ -16,7 +16,17 @@
 from collections import OrderedDict
 import functools
 import re
-from typing import Dict, Mapping, Optional, Sequence, Tuple, Type, Union
+from typing import (
+    Dict,
+    Mapping,
+    MutableMapping,
+    MutableSequence,
+    Optional,
+    Sequence,
+    Tuple,
+    Type,
+    Union,
+)
 
 from google.api_core import exceptions as core_exceptions
 from google.api_core import gapic_v1
@@ -169,9 +179,9 @@ def transport(self) -> EssentialContactsServiceTransport:
     def __init__(
         self,
         *,
-        credentials: ga_credentials.Credentials = None,
+        credentials: Optional[ga_credentials.Credentials] = None,
         transport: Union[str, EssentialContactsServiceTransport] = "grpc_asyncio",
-        client_options: ClientOptions = None,
+        client_options: Optional[ClientOptions] = None,
         client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
     ) -> None:
         """Instantiates the essential contacts service client.
@@ -215,12 +225,12 @@ def __init__(
 
     async def create_contact(
         self,
-        request: Union[service.CreateContactRequest, dict] = None,
+        request: Optional[Union[service.CreateContactRequest, dict]] = None,
         *,
-        parent: str = None,
-        contact: service.Contact = None,
+        parent: Optional[str] = None,
+        contact: Optional[service.Contact] = None,
         retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: float = None,
+        timeout: Optional[float] = None,
         metadata: Sequence[Tuple[str, str]] = (),
     ) -> service.Contact:
         r"""Adds a new contact for a resource.
@@ -252,7 +262,7 @@ async def sample_create_contact():
                 print(response)
 
         Args:
-            request (Union[google.cloud.essential_contacts_v1.types.CreateContactRequest, dict]):
+            request (Optional[Union[google.cloud.essential_contacts_v1.types.CreateContactRequest, dict]]):
                 The request object. Request message for the
                 CreateContact method.
             parent (:class:`str`):
@@ -329,12 +339,12 @@ async def sample_create_contact():
 
     async def update_contact(
         self,
-        request: Union[service.UpdateContactRequest, dict] = None,
+        request: Optional[Union[service.UpdateContactRequest, dict]] = None,
         *,
-        contact: service.Contact = None,
-        update_mask: field_mask_pb2.FieldMask = None,
+        contact: Optional[service.Contact] = None,
+        update_mask: Optional[field_mask_pb2.FieldMask] = None,
         retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: float = None,
+        timeout: Optional[float] = None,
         metadata: Sequence[Tuple[str, str]] = (),
     ) -> service.Contact:
         r"""Updates a contact.
@@ -366,7 +376,7 @@ async def sample_update_contact():
                 print(response)
 
         Args:
-            request (Union[google.cloud.essential_contacts_v1.types.UpdateContactRequest, dict]):
+            request (Optional[Union[google.cloud.essential_contacts_v1.types.UpdateContactRequest, dict]]):
                 The request object. Request message for the
                 UpdateContact method.
             contact (:class:`google.cloud.essential_contacts_v1.types.Contact`):
@@ -446,11 +456,11 @@ async def sample_update_contact():
 
     async def list_contacts(
         self,
-        request: Union[service.ListContactsRequest, dict] = None,
+        request: Optional[Union[service.ListContactsRequest, dict]] = None,
         *,
-        parent: str = None,
+        parent: Optional[str] = None,
         retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: float = None,
+        timeout: Optional[float] = None,
         metadata: Sequence[Tuple[str, str]] = (),
     ) -> pagers.ListContactsAsyncPager:
         r"""Lists the contacts that have been set on a resource.
@@ -483,7 +493,7 @@ async def sample_list_contacts():
                     print(response)
 
         Args:
-            request (Union[google.cloud.essential_contacts_v1.types.ListContactsRequest, dict]):
+            request (Optional[Union[google.cloud.essential_contacts_v1.types.ListContactsRequest, dict]]):
                 The request object. Request message for the ListContacts
                 method.
             parent (:class:`str`):
@@ -571,11 +581,11 @@ async def sample_list_contacts():
 
     async def get_contact(
         self,
-        request: Union[service.GetContactRequest, dict] = None,
+        request: Optional[Union[service.GetContactRequest, dict]] = None,
         *,
-        name: str = None,
+        name: Optional[str] = None,
         retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: float = None,
+        timeout: Optional[float] = None,
         metadata: Sequence[Tuple[str, str]] = (),
     ) -> service.Contact:
         r"""Gets a single contact.
@@ -607,7 +617,7 @@ async def sample_get_contact():
                 print(response)
 
         Args:
-            request (Union[google.cloud.essential_contacts_v1.types.GetContactRequest, dict]):
+            request (Optional[Union[google.cloud.essential_contacts_v1.types.GetContactRequest, dict]]):
                 The request object. Request message for the GetContact
                 method.
             name (:class:`str`):
@@ -684,11 +694,11 @@ async def sample_get_contact():
 
     async def delete_contact(
         self,
-        request: Union[service.DeleteContactRequest, dict] = None,
+        request: Optional[Union[service.DeleteContactRequest, dict]] = None,
         *,
-        name: str = None,
+        name: Optional[str] = None,
         retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: float = None,
+        timeout: Optional[float] = None,
         metadata: Sequence[Tuple[str, str]] = (),
     ) -> None:
         r"""Deletes a contact.
@@ -717,7 +727,7 @@ async def sample_delete_contact():
                 await client.delete_contact(request=request)
 
         Args:
-            request (Union[google.cloud.essential_contacts_v1.types.DeleteContactRequest, dict]):
+            request (Optional[Union[google.cloud.essential_contacts_v1.types.DeleteContactRequest, dict]]):
                 The request object. Request message for the
                 DeleteContact method.
             name (:class:`str`):
@@ -776,10 +786,10 @@ async def sample_delete_contact():
 
     async def compute_contacts(
         self,
-        request: Union[service.ComputeContactsRequest, dict] = None,
+        request: Optional[Union[service.ComputeContactsRequest, dict]] = None,
         *,
         retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: float = None,
+        timeout: Optional[float] = None,
         metadata: Sequence[Tuple[str, str]] = (),
     ) -> pagers.ComputeContactsAsyncPager:
         r"""Lists all contacts for the resource that are
@@ -814,7 +824,7 @@ async def sample_compute_contacts():
                     print(response)
 
         Args:
-            request (Union[google.cloud.essential_contacts_v1.types.ComputeContactsRequest, dict]):
+            request (Optional[Union[google.cloud.essential_contacts_v1.types.ComputeContactsRequest, dict]]):
                 The request object. Request message for the
                 ComputeContacts method.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -871,10 +881,10 @@ async def sample_compute_contacts():
 
     async def send_test_message(
         self,
-        request: Union[service.SendTestMessageRequest, dict] = None,
+        request: Optional[Union[service.SendTestMessageRequest, dict]] = None,
         *,
         retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: float = None,
+        timeout: Optional[float] = None,
         metadata: Sequence[Tuple[str, str]] = (),
     ) -> None:
         r"""Allows a contact admin to send a test message to
@@ -906,7 +916,7 @@ async def sample_send_test_message():
                 await client.send_test_message(request=request)
 
         Args:
-            request (Union[google.cloud.essential_contacts_v1.types.SendTestMessageRequest, dict]):
+            request (Optional[Union[google.cloud.essential_contacts_v1.types.SendTestMessageRequest, dict]]):
                 The request object. Request message for the
                 SendTestMessage method.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
diff --git a/google/cloud/essential_contacts_v1/services/essential_contacts_service/client.py b/google/cloud/essential_contacts_v1/services/essential_contacts_service/client.py
index f0a5cd1..ef7cecd 100644
--- a/google/cloud/essential_contacts_v1/services/essential_contacts_service/client.py
+++ b/google/cloud/essential_contacts_v1/services/essential_contacts_service/client.py
@@ -16,7 +16,18 @@
 from collections import OrderedDict
 import os
 import re
-from typing import Dict, Mapping, Optional, Sequence, Tuple, Type, Union
+from typing import (
+    Dict,
+    Mapping,
+    MutableMapping,
+    MutableSequence,
+    Optional,
+    Sequence,
+    Tuple,
+    Type,
+    Union,
+    cast,
+)
 
 from google.api_core import client_options as client_options_lib
 from google.api_core import exceptions as core_exceptions
@@ -63,7 +74,7 @@ class EssentialContactsServiceClientMeta(type):
 
     def get_transport_class(
         cls,
-        label: str = None,
+        label: Optional[str] = None,
     ) -> Type[EssentialContactsServiceTransport]:
         """Returns an appropriate transport class.
 
@@ -333,8 +344,8 @@ def __init__(
         self,
         *,
         credentials: Optional[ga_credentials.Credentials] = None,
-        transport: Union[str, EssentialContactsServiceTransport, None] = None,
-        client_options: Optional[client_options_lib.ClientOptions] = None,
+        transport: Optional[Union[str, EssentialContactsServiceTransport]] = None,
+        client_options: Optional[Union[client_options_lib.ClientOptions, dict]] = None,
         client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
     ) -> None:
         """Instantiates the essential contacts service client.
@@ -348,7 +359,7 @@ def __init__(
             transport (Union[str, EssentialContactsServiceTransport]): The
                 transport to use. If set to None, a transport is chosen
                 automatically.
-            client_options (google.api_core.client_options.ClientOptions): Custom options for the
+            client_options (Optional[Union[google.api_core.client_options.ClientOptions, dict]]): Custom options for the
                 client. It won't take effect if a ``transport`` instance is provided.
                 (1) The ``api_endpoint`` property can be used to override the
                 default endpoint provided by the client. GOOGLE_API_USE_MTLS_ENDPOINT
@@ -378,6 +389,7 @@ def __init__(
             client_options = client_options_lib.from_dict(client_options)
         if client_options is None:
             client_options = client_options_lib.ClientOptions()
+        client_options = cast(client_options_lib.ClientOptions, client_options)
 
         api_endpoint, client_cert_source_func = self.get_mtls_endpoint_and_cert_source(
             client_options
@@ -430,12 +442,12 @@ def __init__(
 
     def create_contact(
         self,
-        request: Union[service.CreateContactRequest, dict] = None,
+        request: Optional[Union[service.CreateContactRequest, dict]] = None,
         *,
-        parent: str = None,
-        contact: service.Contact = None,
+        parent: Optional[str] = None,
+        contact: Optional[service.Contact] = None,
         retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: float = None,
+        timeout: Optional[float] = None,
         metadata: Sequence[Tuple[str, str]] = (),
     ) -> service.Contact:
         r"""Adds a new contact for a resource.
@@ -544,12 +556,12 @@ def sample_create_contact():
 
     def update_contact(
         self,
-        request: Union[service.UpdateContactRequest, dict] = None,
+        request: Optional[Union[service.UpdateContactRequest, dict]] = None,
         *,
-        contact: service.Contact = None,
-        update_mask: field_mask_pb2.FieldMask = None,
+        contact: Optional[service.Contact] = None,
+        update_mask: Optional[field_mask_pb2.FieldMask] = None,
         retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: float = None,
+        timeout: Optional[float] = None,
         metadata: Sequence[Tuple[str, str]] = (),
     ) -> service.Contact:
         r"""Updates a contact.
@@ -661,11 +673,11 @@ def sample_update_contact():
 
     def list_contacts(
         self,
-        request: Union[service.ListContactsRequest, dict] = None,
+        request: Optional[Union[service.ListContactsRequest, dict]] = None,
         *,
-        parent: str = None,
+        parent: Optional[str] = None,
         retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: float = None,
+        timeout: Optional[float] = None,
         metadata: Sequence[Tuple[str, str]] = (),
     ) -> pagers.ListContactsPager:
         r"""Lists the contacts that have been set on a resource.
@@ -777,11 +789,11 @@ def sample_list_contacts():
 
     def get_contact(
         self,
-        request: Union[service.GetContactRequest, dict] = None,
+        request: Optional[Union[service.GetContactRequest, dict]] = None,
         *,
-        name: str = None,
+        name: Optional[str] = None,
         retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: float = None,
+        timeout: Optional[float] = None,
         metadata: Sequence[Tuple[str, str]] = (),
     ) -> service.Contact:
         r"""Gets a single contact.
@@ -881,11 +893,11 @@ def sample_get_contact():
 
     def delete_contact(
         self,
-        request: Union[service.DeleteContactRequest, dict] = None,
+        request: Optional[Union[service.DeleteContactRequest, dict]] = None,
         *,
-        name: str = None,
+        name: Optional[str] = None,
         retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: float = None,
+        timeout: Optional[float] = None,
         metadata: Sequence[Tuple[str, str]] = (),
     ) -> None:
         r"""Deletes a contact.
@@ -973,10 +985,10 @@ def sample_delete_contact():
 
     def compute_contacts(
         self,
-        request: Union[service.ComputeContactsRequest, dict] = None,
+        request: Optional[Union[service.ComputeContactsRequest, dict]] = None,
         *,
         retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: float = None,
+        timeout: Optional[float] = None,
         metadata: Sequence[Tuple[str, str]] = (),
     ) -> pagers.ComputeContactsPager:
         r"""Lists all contacts for the resource that are
@@ -1069,10 +1081,10 @@ def sample_compute_contacts():
 
     def send_test_message(
         self,
-        request: Union[service.SendTestMessageRequest, dict] = None,
+        request: Optional[Union[service.SendTestMessageRequest, dict]] = None,
         *,
         retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: float = None,
+        timeout: Optional[float] = None,
         metadata: Sequence[Tuple[str, str]] = (),
     ) -> None:
         r"""Allows a contact admin to send a test message to
diff --git a/google/cloud/essential_contacts_v1/services/essential_contacts_service/transports/base.py b/google/cloud/essential_contacts_v1/services/essential_contacts_service/transports/base.py
index 94eeaf3..a467e4c 100644
--- a/google/cloud/essential_contacts_v1/services/essential_contacts_service/transports/base.py
+++ b/google/cloud/essential_contacts_v1/services/essential_contacts_service/transports/base.py
@@ -49,7 +49,7 @@ def __init__(
         self,
         *,
         host: str = DEFAULT_HOST,
-        credentials: ga_credentials.Credentials = None,
+        credentials: Optional[ga_credentials.Credentials] = None,
         credentials_file: Optional[str] = None,
         scopes: Optional[Sequence[str]] = None,
         quota_project_id: Optional[str] = None,
diff --git a/google/cloud/essential_contacts_v1/services/essential_contacts_service/transports/grpc.py b/google/cloud/essential_contacts_v1/services/essential_contacts_service/transports/grpc.py
index 20326cc..690afb6 100644
--- a/google/cloud/essential_contacts_v1/services/essential_contacts_service/transports/grpc.py
+++ b/google/cloud/essential_contacts_v1/services/essential_contacts_service/transports/grpc.py
@@ -47,14 +47,14 @@ def __init__(
         self,
         *,
         host: str = "essentialcontacts.googleapis.com",
-        credentials: ga_credentials.Credentials = None,
-        credentials_file: str = None,
-        scopes: Sequence[str] = None,
-        channel: grpc.Channel = None,
-        api_mtls_endpoint: str = None,
-        client_cert_source: Callable[[], Tuple[bytes, bytes]] = None,
-        ssl_channel_credentials: grpc.ChannelCredentials = None,
-        client_cert_source_for_mtls: Callable[[], Tuple[bytes, bytes]] = None,
+        credentials: Optional[ga_credentials.Credentials] = None,
+        credentials_file: Optional[str] = None,
+        scopes: Optional[Sequence[str]] = None,
+        channel: Optional[grpc.Channel] = None,
+        api_mtls_endpoint: Optional[str] = None,
+        client_cert_source: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
+        ssl_channel_credentials: Optional[grpc.ChannelCredentials] = None,
+        client_cert_source_for_mtls: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
         quota_project_id: Optional[str] = None,
         client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
         always_use_jwt_access: Optional[bool] = False,
@@ -181,8 +181,8 @@ def __init__(
     def create_channel(
         cls,
         host: str = "essentialcontacts.googleapis.com",
-        credentials: ga_credentials.Credentials = None,
-        credentials_file: str = None,
+        credentials: Optional[ga_credentials.Credentials] = None,
+        credentials_file: Optional[str] = None,
         scopes: Optional[Sequence[str]] = None,
         quota_project_id: Optional[str] = None,
         **kwargs,
diff --git a/google/cloud/essential_contacts_v1/services/essential_contacts_service/transports/grpc_asyncio.py b/google/cloud/essential_contacts_v1/services/essential_contacts_service/transports/grpc_asyncio.py
index 1925a9c..3843c6e 100644
--- a/google/cloud/essential_contacts_v1/services/essential_contacts_service/transports/grpc_asyncio.py
+++ b/google/cloud/essential_contacts_v1/services/essential_contacts_service/transports/grpc_asyncio.py
@@ -49,7 +49,7 @@ class EssentialContactsServiceGrpcAsyncIOTransport(EssentialContactsServiceTrans
     def create_channel(
         cls,
         host: str = "essentialcontacts.googleapis.com",
-        credentials: ga_credentials.Credentials = None,
+        credentials: Optional[ga_credentials.Credentials] = None,
         credentials_file: Optional[str] = None,
         scopes: Optional[Sequence[str]] = None,
         quota_project_id: Optional[str] = None,
@@ -92,15 +92,15 @@ def __init__(
         self,
         *,
         host: str = "essentialcontacts.googleapis.com",
-        credentials: ga_credentials.Credentials = None,
+        credentials: Optional[ga_credentials.Credentials] = None,
         credentials_file: Optional[str] = None,
         scopes: Optional[Sequence[str]] = None,
-        channel: aio.Channel = None,
-        api_mtls_endpoint: str = None,
-        client_cert_source: Callable[[], Tuple[bytes, bytes]] = None,
-        ssl_channel_credentials: grpc.ChannelCredentials = None,
-        client_cert_source_for_mtls: Callable[[], Tuple[bytes, bytes]] = None,
-        quota_project_id=None,
+        channel: Optional[aio.Channel] = None,
+        api_mtls_endpoint: Optional[str] = None,
+        client_cert_source: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
+        ssl_channel_credentials: Optional[grpc.ChannelCredentials] = None,
+        client_cert_source_for_mtls: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
+        quota_project_id: Optional[str] = None,
         client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
         always_use_jwt_access: Optional[bool] = False,
         api_audience: Optional[str] = None,
diff --git a/google/cloud/essential_contacts_v1/types/enums.py b/google/cloud/essential_contacts_v1/types/enums.py
index fca7045..92ad009 100644
--- a/google/cloud/essential_contacts_v1/types/enums.py
+++ b/google/cloud/essential_contacts_v1/types/enums.py
@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+from typing import MutableMapping, MutableSequence
+
 import proto  # type: ignore
 
 __protobuf__ = proto.module(
diff --git a/google/cloud/essential_contacts_v1/types/service.py b/google/cloud/essential_contacts_v1/types/service.py
index 73bcbcc..cdb0a96 100644
--- a/google/cloud/essential_contacts_v1/types/service.py
+++ b/google/cloud/essential_contacts_v1/types/service.py
@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+from typing import MutableMapping, MutableSequence
+
 from google.protobuf import field_mask_pb2  # type: ignore
 from google.protobuf import timestamp_pb2  # type: ignore
 import proto  # type: ignore
@@ -47,7 +49,7 @@ class Contact(proto.Message):
             Required. The email address to send
             notifications to. This does not need to be a
             Google account.
-        notification_category_subscriptions (Sequence[google.cloud.essential_contacts_v1.types.NotificationCategory]):
+        notification_category_subscriptions (MutableSequence[google.cloud.essential_contacts_v1.types.NotificationCategory]):
             The categories of notifications that the
             contact will receive communications for.
         language_tag (str):
@@ -65,29 +67,31 @@ class Contact(proto.Message):
             its validation state was updated more than 1 year ago.
     """
 
-    name = proto.Field(
+    name: str = proto.Field(
         proto.STRING,
         number=1,
     )
-    email = proto.Field(
+    email: str = proto.Field(
         proto.STRING,
         number=2,
     )
-    notification_category_subscriptions = proto.RepeatedField(
+    notification_category_subscriptions: MutableSequence[
+        enums.NotificationCategory
+    ] = proto.RepeatedField(
         proto.ENUM,
         number=3,
         enum=enums.NotificationCategory,
     )
-    language_tag = proto.Field(
+    language_tag: str = proto.Field(
         proto.STRING,
         number=4,
     )
-    validation_state = proto.Field(
+    validation_state: enums.ValidationState = proto.Field(
         proto.ENUM,
         number=8,
         enum=enums.ValidationState,
     )
-    validate_time = proto.Field(
+    validate_time: timestamp_pb2.Timestamp = proto.Field(
         proto.MESSAGE,
         number=9,
         message=timestamp_pb2.Timestamp,
@@ -116,15 +120,15 @@ class ListContactsRequest(proto.Message):
             identical to those in the previous call.
     """
 
-    parent = proto.Field(
+    parent: str = proto.Field(
         proto.STRING,
         number=1,
     )
-    page_size = proto.Field(
+    page_size: int = proto.Field(
         proto.INT32,
         number=2,
     )
-    page_token = proto.Field(
+    page_token: str = proto.Field(
         proto.STRING,
         number=3,
     )
@@ -134,7 +138,7 @@ class ListContactsResponse(proto.Message):
     r"""Response message for the ListContacts method.
 
     Attributes:
-        contacts (Sequence[google.cloud.essential_contacts_v1.types.Contact]):
+        contacts (MutableSequence[google.cloud.essential_contacts_v1.types.Contact]):
             The contacts for the specified resource.
         next_page_token (str):
             If there are more results than those appearing in this
@@ -148,12 +152,12 @@ class ListContactsResponse(proto.Message):
     def raw_page(self):
         return self
 
-    contacts = proto.RepeatedField(
+    contacts: MutableSequence["Contact"] = proto.RepeatedField(
         proto.MESSAGE,
         number=1,
         message="Contact",
     )
-    next_page_token = proto.Field(
+    next_page_token: str = proto.Field(
         proto.STRING,
         number=2,
     )
@@ -170,7 +174,7 @@ class GetContactRequest(proto.Message):
             projects/{project_id}/contacts/{contact_id}
     """
 
-    name = proto.Field(
+    name: str = proto.Field(
         proto.STRING,
         number=1,
     )
@@ -187,7 +191,7 @@ class DeleteContactRequest(proto.Message):
             projects/{project_id}/contacts/{contact_id}
     """
 
-    name = proto.Field(
+    name: str = proto.Field(
         proto.STRING,
         number=1,
     )
@@ -206,11 +210,11 @@ class CreateContactRequest(proto.Message):
             an email address and language tag.
     """
 
-    parent = proto.Field(
+    parent: str = proto.Field(
         proto.STRING,
         number=1,
     )
-    contact = proto.Field(
+    contact: "Contact" = proto.Field(
         proto.MESSAGE,
         number=2,
         message="Contact",
@@ -231,12 +235,12 @@ class UpdateContactRequest(proto.Message):
             https://developers.google.com/protocol-buffers/docs/reference/google.protobuf#fieldmask
     """
 
-    contact = proto.Field(
+    contact: "Contact" = proto.Field(
         proto.MESSAGE,
         number=2,
         message="Contact",
     )
-    update_mask = proto.Field(
+    update_mask: field_mask_pb2.FieldMask = proto.Field(
         proto.MESSAGE,
         number=3,
         message=field_mask_pb2.FieldMask,
@@ -251,7 +255,7 @@ class ComputeContactsRequest(proto.Message):
             Required. The name of the resource to compute contacts for.
             Format: organizations/{organization_id}, folders/{folder_id}
             or projects/{project_id}
-        notification_categories (Sequence[google.cloud.essential_contacts_v1.types.NotificationCategory]):
+        notification_categories (MutableSequence[google.cloud.essential_contacts_v1.types.NotificationCategory]):
             The categories of notifications to compute
             contacts for. If ALL is included in this list,
             contacts subscribed to any notification category
@@ -270,20 +274,22 @@ class ComputeContactsRequest(proto.Message):
             identical to those in the previous call.
     """
 
-    parent = proto.Field(
+    parent: str = proto.Field(
         proto.STRING,
         number=1,
     )
-    notification_categories = proto.RepeatedField(
+    notification_categories: MutableSequence[
+        enums.NotificationCategory
+    ] = proto.RepeatedField(
         proto.ENUM,
         number=6,
         enum=enums.NotificationCategory,
     )
-    page_size = proto.Field(
+    page_size: int = proto.Field(
         proto.INT32,
         number=3,
     )
-    page_token = proto.Field(
+    page_token: str = proto.Field(
         proto.STRING,
         number=4,
     )
@@ -293,7 +299,7 @@ class ComputeContactsResponse(proto.Message):
     r"""Response message for the ComputeContacts method.
 
     Attributes:
-        contacts (Sequence[google.cloud.essential_contacts_v1.types.Contact]):
+        contacts (MutableSequence[google.cloud.essential_contacts_v1.types.Contact]):
             All contacts for the resource that are
             subscribed to the specified notification
             categories, including contacts inherited from
@@ -310,12 +316,12 @@ class ComputeContactsResponse(proto.Message):
     def raw_page(self):
         return self
 
-    contacts = proto.RepeatedField(
+    contacts: MutableSequence["Contact"] = proto.RepeatedField(
         proto.MESSAGE,
         number=1,
         message="Contact",
     )
-    next_page_token = proto.Field(
+    next_page_token: str = proto.Field(
         proto.STRING,
         number=2,
     )
@@ -325,7 +331,7 @@ class SendTestMessageRequest(proto.Message):
     r"""Request message for the SendTestMessage method.
 
     Attributes:
-        contacts (Sequence[str]):
+        contacts (MutableSequence[str]):
             Required. The list of names of the contacts to send a test
             message to. Format:
             organizations/{organization_id}/contacts/{contact_id},
@@ -344,15 +350,15 @@ class SendTestMessageRequest(proto.Message):
             subscribed to this category.
     """
 
-    contacts = proto.RepeatedField(
+    contacts: MutableSequence[str] = proto.RepeatedField(
         proto.STRING,
         number=1,
     )
-    resource = proto.Field(
+    resource: str = proto.Field(
         proto.STRING,
         number=2,
     )
-    notification_category = proto.Field(
+    notification_category: enums.NotificationCategory = proto.Field(
         proto.ENUM,
         number=3,
         enum=enums.NotificationCategory,
diff --git a/owlbot.py b/owlbot.py
new file mode 100644
index 0000000..ce738f0
--- /dev/null
+++ b/owlbot.py
@@ -0,0 +1,56 @@
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import json
+from pathlib import Path
+import shutil
+
+import synthtool as s
+import synthtool.gcp as gcp
+from synthtool.languages import python
+
+# ----------------------------------------------------------------------------
+# Copy the generated client from the owl-bot staging directory
+# ----------------------------------------------------------------------------
+
+clean_up_generated_samples = True
+
+# Load the default version defined in .repo-metadata.json.
+default_version = json.load(open(".repo-metadata.json", "rt")).get(
+    "default_version"
+)
+
+for library in s.get_staging_dirs(default_version):
+    if clean_up_generated_samples:
+        shutil.rmtree("samples/generated_samples", ignore_errors=True)
+        clean_up_generated_samples = False
+    s.move([library], excludes=["**/gapic_version.py"])
+s.remove_staging_dirs()
+
+# ----------------------------------------------------------------------------
+# Add templated files
+# ----------------------------------------------------------------------------
+
+templated_files = gcp.CommonTemplates().py_library(
+    cov_level=100,
+    microgenerator=True,
+    versions=gcp.common.detect_versions(path="./google", default_first=True),
+)
+s.move(templated_files, excludes=[".coveragerc", ".github/release-please.yml"])
+
+python.py_samples(skip_readmes=True)
+
+# run format session for all directories which have a noxfile
+for noxfile in Path(".").glob("**/noxfile.py"):
+    s.shell.run(["nox", "-s", "format"], cwd=noxfile.parent, hide_output=False)
diff --git a/release-please-config.json b/release-please-config.json
new file mode 100644
index 0000000..475f36a
--- /dev/null
+++ b/release-please-config.json
@@ -0,0 +1,23 @@
+{
+  "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
+  "packages": {
+    ".": {
+      "release-type": "python",
+      "extra-files": [
+        "google/cloud/essential_contacts/gapic_version.py",
+        {
+          "type": "json",
+          "path": "samples/generated_samples/snippet_metadata_google.cloud.essentialcontacts.v1.json",
+          "jsonpath": "$.clientLibrary.version"
+        }
+      ]
+    }
+  },
+  "release-type": "python",
+  "plugins": [
+    {
+      "type": "sentence-case"
+    }
+  ],
+  "initial-version": "0.1.0"
+}
diff --git a/samples/generated_samples/snippet_metadata_essential contacts_v1.json b/samples/generated_samples/snippet_metadata_google.cloud.essentialcontacts.v1.json
similarity index 99%
rename from samples/generated_samples/snippet_metadata_essential contacts_v1.json
rename to samples/generated_samples/snippet_metadata_google.cloud.essentialcontacts.v1.json
index 0afaccb..489bc82 100644
--- a/samples/generated_samples/snippet_metadata_essential contacts_v1.json	
+++ b/samples/generated_samples/snippet_metadata_google.cloud.essentialcontacts.v1.json
@@ -7,7 +7,8 @@
       }
     ],
     "language": "PYTHON",
-    "name": "google-cloud-essential-contacts"
+    "name": "google-cloud-essential-contacts",
+    "version": "0.1.0"
   },
   "snippets": [
     {
diff --git a/setup.py b/setup.py
index 4979fa7..168987e 100644
--- a/setup.py
+++ b/setup.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -18,15 +18,31 @@
 
 import setuptools  # type: ignore
 
+package_root = os.path.abspath(os.path.dirname(__file__))
+
 name = "google-cloud-essential-contacts"
-description = "Essential Contacts API client library"
-version = "1.2.3"
-release_status = "Development Status :: 5 - Production/Stable"
+
+
+description = "Google Cloud Essential Contacts API client library"
+
+version = {}
+with open(
+    os.path.join(package_root, "google/cloud/essential_contacts/gapic_version.py")
+) as fp:
+    exec(fp.read(), version)
+version = version["__version__"]
+
+if version[0] == "0":
+    release_status = "Development Status :: 4 - Beta"
+else:
+    release_status = "Development Status :: 5 - Production/Stable"
+
 dependencies = [
-    "google-api-core[grpc] >= 1.32.0, <3.0.0dev,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.*,!=2.4.*,!=2.5.*,!=2.6.*,!=2.7.*",
+    "google-api-core[grpc] >= 1.33.2, <3.0.0dev,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.*,!=2.4.*,!=2.5.*,!=2.6.*,!=2.7.*",
     "proto-plus >= 1.22.0, <2.0.0dev",
     "protobuf>=3.19.5,<5.0.0dev,!=3.20.0,!=3.20.1,!=4.21.0,!=4.21.1,!=4.21.2,!=4.21.3,!=4.21.4,!=4.21.5",
 ]
+url = "https://github.com/googleapis/python-essential-contacts"
 
 package_root = os.path.abspath(os.path.dirname(__file__))
 
@@ -34,6 +50,16 @@
 with io.open(readme_filename, encoding="utf-8") as readme_file:
     readme = readme_file.read()
 
+packages = [
+    package
+    for package in setuptools.PEP420PackageFinder.find()
+    if package.startswith("google")
+]
+
+namespaces = ["google"]
+if "google.cloud" in packages:
+    namespaces.append("google.cloud")
+
 setuptools.setup(
     name=name,
     version=version,
@@ -42,27 +68,25 @@
     author="Google LLC",
     author_email="googleapis-packages@google.com",
     license="Apache 2.0",
-    url="https://github.com/googleapis/python-essential-contacts",
-    packages=[
-        package
-        for package in setuptools.PEP420PackageFinder.find()
-        if package.startswith("google")
-    ],
-    namespace_packages=("google", "google.cloud"),
-    platforms="Posix; MacOS X; Windows",
-    include_package_data=True,
-    install_requires=dependencies,
-    python_requires=">=3.7",
+    url=url,
     classifiers=[
         release_status,
         "Intended Audience :: Developers",
-        "Operating System :: OS Independent",
+        "License :: OSI Approved :: Apache Software License",
+        "Programming Language :: Python",
+        "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
+        "Operating System :: OS Independent",
         "Topic :: Internet",
-        "Topic :: Software Development :: Libraries :: Python Modules",
     ],
+    platforms="Posix; MacOS X; Windows",
+    packages=packages,
+    python_requires=">=3.7",
+    namespace_packages=namespaces,
+    install_requires=dependencies,
+    include_package_data=True,
     zip_safe=False,
 )
diff --git a/testing/constraints-3.10.txt b/testing/constraints-3.10.txt
index e69de29..ed7f9ae 100644
--- a/testing/constraints-3.10.txt
+++ b/testing/constraints-3.10.txt
@@ -0,0 +1,6 @@
+# -*- coding: utf-8 -*-
+# This constraints file is required for unit tests.
+# List all library dependencies and extras in this file.
+google-api-core
+proto-plus
+protobuf
diff --git a/testing/constraints-3.11.txt b/testing/constraints-3.11.txt
index e69de29..ed7f9ae 100644
--- a/testing/constraints-3.11.txt
+++ b/testing/constraints-3.11.txt
@@ -0,0 +1,6 @@
+# -*- coding: utf-8 -*-
+# This constraints file is required for unit tests.
+# List all library dependencies and extras in this file.
+google-api-core
+proto-plus
+protobuf
diff --git a/testing/constraints-3.7.txt b/testing/constraints-3.7.txt
index 5dcaa6f..6f3158c 100644
--- a/testing/constraints-3.7.txt
+++ b/testing/constraints-3.7.txt
@@ -1,10 +1,9 @@
 # This constraints file is used to check that lower bounds
 # are correct in setup.py
-# List *all* library dependencies and extras in this file.
+# List all library dependencies and extras in this file.
 # Pin the version to the lower bound.
-#
-# e.g., if setup.py has "foo >= 1.14.0, < 2.0.0dev",
-# Then this file should have foo==1.14.0
-google-api-core==1.32.0
+# e.g., if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0dev",
+# Then this file should have google-cloud-foo==1.14.0
+google-api-core==1.33.2
 proto-plus==1.22.0
 protobuf==3.19.5
diff --git a/testing/constraints-3.8.txt b/testing/constraints-3.8.txt
index e69de29..ed7f9ae 100644
--- a/testing/constraints-3.8.txt
+++ b/testing/constraints-3.8.txt
@@ -0,0 +1,6 @@
+# -*- coding: utf-8 -*-
+# This constraints file is required for unit tests.
+# List all library dependencies and extras in this file.
+google-api-core
+proto-plus
+protobuf
diff --git a/testing/constraints-3.9.txt b/testing/constraints-3.9.txt
index e69de29..ed7f9ae 100644
--- a/testing/constraints-3.9.txt
+++ b/testing/constraints-3.9.txt
@@ -0,0 +1,6 @@
+# -*- coding: utf-8 -*-
+# This constraints file is required for unit tests.
+# List all library dependencies and extras in this file.
+google-api-core
+proto-plus
+protobuf