diff --git a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/base.py b/google/cloud/spanner_admin_database_v1/services/database_admin/transports/base.py
index 689f6afe96..16a075d983 100644
--- a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/base.py
+++ b/google/cloud/spanner_admin_database_v1/services/database_admin/transports/base.py
@@ -81,9 +81,10 @@ def __init__(
                 credentials identify the application to the service; if none
                 are specified, the client will attempt to ascertain the
                 credentials from the environment.
-            credentials_file (Optional[str]): A file with credentials that can
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
                 be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is mutually exclusive with credentials.
+                This argument is mutually exclusive with credentials. This argument will be
+                removed in the next major version of this library.
             scopes (Optional[Sequence[str]]): A list of scopes.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/grpc.py b/google/cloud/spanner_admin_database_v1/services/database_admin/transports/grpc.py
index 77aeafe15f..0888d9af16 100644
--- a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/grpc.py
+++ b/google/cloud/spanner_admin_database_v1/services/database_admin/transports/grpc.py
@@ -169,9 +169,10 @@ def __init__(
                 are specified, the client will attempt to ascertain the
                 credentials from the environment.
                 This argument is ignored if a ``channel`` instance is provided.
-            credentials_file (Optional[str]): A file with credentials that can
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
                 be loaded with :func:`google.auth.load_credentials_from_file`.
                 This argument is ignored if a ``channel`` instance is provided.
+                This argument will be removed in the next major version of this library.
             scopes (Optional(Sequence[str])): A list of scopes. This argument is
                 ignored if a ``channel`` instance is provided.
             channel (Optional[Union[grpc.Channel, Callable[..., grpc.Channel]]]):
@@ -306,9 +307,10 @@ def create_channel(
                 credentials identify this application to the service. If
                 none are specified, the client will attempt to ascertain
                 the credentials from the environment.
-            credentials_file (Optional[str]): A file with credentials that can
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
                 be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is mutually exclusive with credentials.
+                This argument is mutually exclusive with credentials.  This argument will be
+                removed in the next major version of this library.
             scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
                 service. These are only used when credentials are not specified and
                 are passed to :func:`google.auth.default`.
diff --git a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/grpc_asyncio.py b/google/cloud/spanner_admin_database_v1/services/database_admin/transports/grpc_asyncio.py
index b30f123623..145c6ebf03 100644
--- a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/grpc_asyncio.py
+++ b/google/cloud/spanner_admin_database_v1/services/database_admin/transports/grpc_asyncio.py
@@ -166,8 +166,9 @@ def create_channel(
                 credentials identify this application to the service. If
                 none are specified, the client will attempt to ascertain
                 the credentials from the environment.
-            credentials_file (Optional[str]): A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
+                be loaded with :func:`google.auth.load_credentials_from_file`. This argument will be
+                removed in the next major version of this library.
             scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
                 service. These are only used when credentials are not specified and
                 are passed to :func:`google.auth.default`.
@@ -218,9 +219,10 @@ def __init__(
                 are specified, the client will attempt to ascertain the
                 credentials from the environment.
                 This argument is ignored if a ``channel`` instance is provided.
-            credentials_file (Optional[str]): A file with credentials that can
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
                 be loaded with :func:`google.auth.load_credentials_from_file`.
                 This argument is ignored if a ``channel`` instance is provided.
+                This argument will be removed in the next major version of this library.
             scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
                 service. These are only used when credentials are not specified and
                 are passed to :func:`google.auth.default`.
diff --git a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/rest.py b/google/cloud/spanner_admin_database_v1/services/database_admin/transports/rest.py
index df70fc5636..dfec442041 100644
--- a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/rest.py
+++ b/google/cloud/spanner_admin_database_v1/services/database_admin/transports/rest.py
@@ -1622,9 +1622,10 @@ def __init__(
                 are specified, the client will attempt to ascertain the
                 credentials from the environment.
 
-            credentials_file (Optional[str]): A file with credentials that can
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
                 be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is ignored if ``channel`` is provided.
+                This argument is ignored if ``channel`` is provided. This argument will be
+                removed in the next major version of this library.
             scopes (Optional(Sequence[str])): A list of scopes. This argument is
                 ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Callable[[], Tuple[bytes, bytes]]): Client
diff --git a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/base.py b/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/base.py
index 5a737b69f7..d8c055d60e 100644
--- a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/base.py
+++ b/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/base.py
@@ -75,9 +75,10 @@ def __init__(
                 credentials identify the application to the service; if none
                 are specified, the client will attempt to ascertain the
                 credentials from the environment.
-            credentials_file (Optional[str]): A file with credentials that can
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
                 be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is mutually exclusive with credentials.
+                This argument is mutually exclusive with credentials. This argument will be
+                removed in the next major version of this library.
             scopes (Optional[Sequence[str]]): A list of scopes.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/grpc.py b/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/grpc.py
index d9971a4ad2..844a86fcc0 100644
--- a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/grpc.py
+++ b/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/grpc.py
@@ -178,9 +178,10 @@ def __init__(
                 are specified, the client will attempt to ascertain the
                 credentials from the environment.
                 This argument is ignored if a ``channel`` instance is provided.
-            credentials_file (Optional[str]): A file with credentials that can
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
                 be loaded with :func:`google.auth.load_credentials_from_file`.
                 This argument is ignored if a ``channel`` instance is provided.
+                This argument will be removed in the next major version of this library.
             scopes (Optional(Sequence[str])): A list of scopes. This argument is
                 ignored if a ``channel`` instance is provided.
             channel (Optional[Union[grpc.Channel, Callable[..., grpc.Channel]]]):
@@ -315,9 +316,10 @@ def create_channel(
                 credentials identify this application to the service. If
                 none are specified, the client will attempt to ascertain
                 the credentials from the environment.
-            credentials_file (Optional[str]): A file with credentials that can
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
                 be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is mutually exclusive with credentials.
+                This argument is mutually exclusive with credentials.  This argument will be
+                removed in the next major version of this library.
             scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
                 service. These are only used when credentials are not specified and
                 are passed to :func:`google.auth.default`.
diff --git a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/grpc_asyncio.py b/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/grpc_asyncio.py
index 8d9adff29b..e6d2e48cb3 100644
--- a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/grpc_asyncio.py
+++ b/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/grpc_asyncio.py
@@ -175,8 +175,9 @@ def create_channel(
                 credentials identify this application to the service. If
                 none are specified, the client will attempt to ascertain
                 the credentials from the environment.
-            credentials_file (Optional[str]): A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
+                be loaded with :func:`google.auth.load_credentials_from_file`. This argument will be
+                removed in the next major version of this library.
             scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
                 service. These are only used when credentials are not specified and
                 are passed to :func:`google.auth.default`.
@@ -227,9 +228,10 @@ def __init__(
                 are specified, the client will attempt to ascertain the
                 credentials from the environment.
                 This argument is ignored if a ``channel`` instance is provided.
-            credentials_file (Optional[str]): A file with credentials that can
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
                 be loaded with :func:`google.auth.load_credentials_from_file`.
                 This argument is ignored if a ``channel`` instance is provided.
+                This argument will be removed in the next major version of this library.
             scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
                 service. These are only used when credentials are not specified and
                 are passed to :func:`google.auth.default`.
diff --git a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/rest.py b/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/rest.py
index ca32cafa99..feef4e8048 100644
--- a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/rest.py
+++ b/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/rest.py
@@ -1355,9 +1355,10 @@ def __init__(
                 are specified, the client will attempt to ascertain the
                 credentials from the environment.
 
-            credentials_file (Optional[str]): A file with credentials that can
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
                 be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is ignored if ``channel`` is provided.
+                This argument is ignored if ``channel`` is provided. This argument will be
+                removed in the next major version of this library.
             scopes (Optional(Sequence[str])): A list of scopes. This argument is
                 ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Callable[[], Tuple[bytes, bytes]]): Client
diff --git a/google/cloud/spanner_admin_instance_v1/types/spanner_instance_admin.py b/google/cloud/spanner_admin_instance_v1/types/spanner_instance_admin.py
index 1e1509d1c4..be1822b33c 100644
--- a/google/cloud/spanner_admin_instance_v1/types/spanner_instance_admin.py
+++ b/google/cloud/spanner_admin_instance_v1/types/spanner_instance_admin.py
@@ -1765,6 +1765,12 @@ class InstancePartition(proto.Message):
             that are not yet in the ``READY`` state.
 
             This field is a member of `oneof`_ ``compute_capacity``.
+        autoscaling_config (google.cloud.spanner_admin_instance_v1.types.AutoscalingConfig):
+            Optional. The autoscaling configuration. Autoscaling is
+            enabled if this field is set. When autoscaling is enabled,
+            fields in compute_capacity are treated as OUTPUT_ONLY fields
+            and reflect the current compute capacity allocated to the
+            instance partition.
         state (google.cloud.spanner_admin_instance_v1.types.InstancePartition.State):
             Output only. The current instance partition
             state.
@@ -1848,6 +1854,11 @@ class State(proto.Enum):
         number=6,
         oneof="compute_capacity",
     )
+    autoscaling_config: "AutoscalingConfig" = proto.Field(
+        proto.MESSAGE,
+        number=13,
+        message="AutoscalingConfig",
+    )
     state: State = proto.Field(
         proto.ENUM,
         number=7,
diff --git a/google/cloud/spanner_v1/services/spanner/transports/base.py b/google/cloud/spanner_v1/services/spanner/transports/base.py
index d1dfe07291..3e68439cd7 100644
--- a/google/cloud/spanner_v1/services/spanner/transports/base.py
+++ b/google/cloud/spanner_v1/services/spanner/transports/base.py
@@ -76,9 +76,10 @@ def __init__(
                 credentials identify the application to the service; if none
                 are specified, the client will attempt to ascertain the
                 credentials from the environment.
-            credentials_file (Optional[str]): A file with credentials that can
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
                 be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is mutually exclusive with credentials.
+                This argument is mutually exclusive with credentials. This argument will be
+                removed in the next major version of this library.
             scopes (Optional[Sequence[str]]): A list of scopes.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/spanner_v1/services/spanner/transports/grpc.py b/google/cloud/spanner_v1/services/spanner/transports/grpc.py
index f0bfd18586..0d0613152f 100644
--- a/google/cloud/spanner_v1/services/spanner/transports/grpc.py
+++ b/google/cloud/spanner_v1/services/spanner/transports/grpc.py
@@ -160,9 +160,10 @@ def __init__(
                 are specified, the client will attempt to ascertain the
                 credentials from the environment.
                 This argument is ignored if a ``channel`` instance is provided.
-            credentials_file (Optional[str]): A file with credentials that can
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
                 be loaded with :func:`google.auth.load_credentials_from_file`.
                 This argument is ignored if a ``channel`` instance is provided.
+                This argument will be removed in the next major version of this library.
             scopes (Optional(Sequence[str])): A list of scopes. This argument is
                 ignored if a ``channel`` instance is provided.
             channel (Optional[Union[grpc.Channel, Callable[..., grpc.Channel]]]):
@@ -304,9 +305,10 @@ def create_channel(
                 credentials identify this application to the service. If
                 none are specified, the client will attempt to ascertain
                 the credentials from the environment.
-            credentials_file (Optional[str]): A file with credentials that can
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
                 be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is mutually exclusive with credentials.
+                This argument is mutually exclusive with credentials.  This argument will be
+                removed in the next major version of this library.
             scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
                 service. These are only used when credentials are not specified and
                 are passed to :func:`google.auth.default`.
diff --git a/google/cloud/spanner_v1/services/spanner/transports/grpc_asyncio.py b/google/cloud/spanner_v1/services/spanner/transports/grpc_asyncio.py
index be00f6d305..4f492c7f44 100644
--- a/google/cloud/spanner_v1/services/spanner/transports/grpc_asyncio.py
+++ b/google/cloud/spanner_v1/services/spanner/transports/grpc_asyncio.py
@@ -156,8 +156,9 @@ def create_channel(
                 credentials identify this application to the service. If
                 none are specified, the client will attempt to ascertain
                 the credentials from the environment.
-            credentials_file (Optional[str]): A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
+                be loaded with :func:`google.auth.load_credentials_from_file`. This argument will be
+                removed in the next major version of this library.
             scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
                 service. These are only used when credentials are not specified and
                 are passed to :func:`google.auth.default`.
@@ -209,9 +210,10 @@ def __init__(
                 are specified, the client will attempt to ascertain the
                 credentials from the environment.
                 This argument is ignored if a ``channel`` instance is provided.
-            credentials_file (Optional[str]): A file with credentials that can
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
                 be loaded with :func:`google.auth.load_credentials_from_file`.
                 This argument is ignored if a ``channel`` instance is provided.
+                This argument will be removed in the next major version of this library.
             scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
                 service. These are only used when credentials are not specified and
                 are passed to :func:`google.auth.default`.
diff --git a/google/cloud/spanner_v1/services/spanner/transports/rest.py b/google/cloud/spanner_v1/services/spanner/transports/rest.py
index 7b49a0d76a..721e9929b3 100644
--- a/google/cloud/spanner_v1/services/spanner/transports/rest.py
+++ b/google/cloud/spanner_v1/services/spanner/transports/rest.py
@@ -933,9 +933,10 @@ def __init__(
                 are specified, the client will attempt to ascertain the
                 credentials from the environment.
 
-            credentials_file (Optional[str]): A file with credentials that can
+            credentials_file (Optional[str]): Deprecated. A file with credentials that can
                 be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is ignored if ``channel`` is provided.
+                This argument is ignored if ``channel`` is provided. This argument will be
+                removed in the next major version of this library.
             scopes (Optional(Sequence[str])): A list of scopes. This argument is
                 ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Callable[[], Tuple[bytes, bytes]]): Client
diff --git a/samples/generated_samples/snippet_metadata_google.spanner.admin.database.v1.json b/samples/generated_samples/snippet_metadata_google.spanner.admin.database.v1.json
index e6eeb1f977..e89008727d 100644
--- a/samples/generated_samples/snippet_metadata_google.spanner.admin.database.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.spanner.admin.database.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-spanner-admin-database",
-    "version": "3.59.0"
+    "version": "0.0.0"
   },
   "snippets": [
     {
diff --git a/samples/generated_samples/snippet_metadata_google.spanner.admin.instance.v1.json b/samples/generated_samples/snippet_metadata_google.spanner.admin.instance.v1.json
index 92ae0279ef..f58e9794e2 100644
--- a/samples/generated_samples/snippet_metadata_google.spanner.admin.instance.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.spanner.admin.instance.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-spanner-admin-instance",
-    "version": "3.59.0"
+    "version": "0.0.0"
   },
   "snippets": [
     {
diff --git a/samples/generated_samples/snippet_metadata_google.spanner.v1.json b/samples/generated_samples/snippet_metadata_google.spanner.v1.json
index 4d84b1ab9a..f7f33c3d29 100644
--- a/samples/generated_samples/snippet_metadata_google.spanner.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.spanner.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-spanner",
-    "version": "3.59.0"
+    "version": "0.0.0"
   },
   "snippets": [
     {
diff --git a/testing/constraints-3.10.txt b/testing/constraints-3.10.txt
index ad3f0fa58e..ef1c92ffff 100644
--- a/testing/constraints-3.10.txt
+++ b/testing/constraints-3.10.txt
@@ -2,6 +2,8 @@
 # This constraints file is required for unit tests.
 # List all library dependencies and extras in this file.
 google-api-core
+google-auth
+grpcio
 proto-plus
 protobuf
 grpc-google-iam-v1
diff --git a/testing/constraints-3.11.txt b/testing/constraints-3.11.txt
index ad3f0fa58e..ef1c92ffff 100644
--- a/testing/constraints-3.11.txt
+++ b/testing/constraints-3.11.txt
@@ -2,6 +2,8 @@
 # This constraints file is required for unit tests.
 # List all library dependencies and extras in this file.
 google-api-core
+google-auth
+grpcio
 proto-plus
 protobuf
 grpc-google-iam-v1
diff --git a/testing/constraints-3.12.txt b/testing/constraints-3.12.txt
index ad3f0fa58e..ef1c92ffff 100644
--- a/testing/constraints-3.12.txt
+++ b/testing/constraints-3.12.txt
@@ -2,6 +2,8 @@
 # This constraints file is required for unit tests.
 # List all library dependencies and extras in this file.
 google-api-core
+google-auth
+grpcio
 proto-plus
 protobuf
 grpc-google-iam-v1
diff --git a/testing/constraints-3.13.txt b/testing/constraints-3.13.txt
index 2010e549cc..2ae5a677e8 100644
--- a/testing/constraints-3.13.txt
+++ b/testing/constraints-3.13.txt
@@ -7,6 +7,7 @@
 # Then this file should have google-cloud-foo>=1
 google-api-core>=2
 google-auth>=2
+grpcio>=1
 proto-plus>=1
 protobuf>=6
 grpc-google-iam-v1>=0
diff --git a/testing/constraints-3.14.txt b/testing/constraints-3.14.txt
new file mode 100644
index 0000000000..2ae5a677e8
--- /dev/null
+++ b/testing/constraints-3.14.txt
@@ -0,0 +1,13 @@
+# We use the constraints file for the latest Python version
+# (currently this file) to check that the latest
+# major versions of dependencies are supported in setup.py.
+# List all library dependencies and extras in this file.
+# Require the latest major version be installed for each dependency.
+# e.g., if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0",
+# Then this file should have google-cloud-foo>=1
+google-api-core>=2
+google-auth>=2
+grpcio>=1
+proto-plus>=1
+protobuf>=6
+grpc-google-iam-v1>=0
diff --git a/testing/constraints-3.8.txt b/testing/constraints-3.8.txt
index ad3f0fa58e..ef1c92ffff 100644
--- a/testing/constraints-3.8.txt
+++ b/testing/constraints-3.8.txt
@@ -2,6 +2,8 @@
 # This constraints file is required for unit tests.
 # List all library dependencies and extras in this file.
 google-api-core
+google-auth
+grpcio
 proto-plus
 protobuf
 grpc-google-iam-v1
diff --git a/testing/constraints-3.9.txt b/testing/constraints-3.9.txt
index ad3f0fa58e..ef1c92ffff 100644
--- a/testing/constraints-3.9.txt
+++ b/testing/constraints-3.9.txt
@@ -2,6 +2,8 @@
 # This constraints file is required for unit tests.
 # List all library dependencies and extras in this file.
 google-api-core
+google-auth
+grpcio
 proto-plus
 protobuf
 grpc-google-iam-v1