diff --git a/packages/google-cloud-gke-hub/google/cloud/gkehub_v1/services/gke_hub/async_client.py b/packages/google-cloud-gke-hub/google/cloud/gkehub_v1/services/gke_hub/async_client.py
index 4a8c7e44e739..8f953c800ec4 100644
--- a/packages/google-cloud-gke-hub/google/cloud/gkehub_v1/services/gke_hub/async_client.py
+++ b/packages/google-cloud-gke-hub/google/cloud/gkehub_v1/services/gke_hub/async_client.py
@@ -146,7 +146,7 @@ def get_mtls_endpoint_and_cert_source(
         The API endpoint is determined in the following order:
         (1) if `client_options.api_endpoint` if provided, use the provided one.
         (2) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is "always", use the
-        default mTLS endpoint; if the environment variabel is "never", use the default API
+        default mTLS endpoint; if the environment variable is "never", use the default API
         endpoint; otherwise if client cert source exists, use the default mTLS endpoint, otherwise
         use the default API endpoint.
 
diff --git a/packages/google-cloud-gke-hub/google/cloud/gkehub_v1/services/gke_hub/client.py b/packages/google-cloud-gke-hub/google/cloud/gkehub_v1/services/gke_hub/client.py
index a6366fd506c0..e260f6d838f5 100644
--- a/packages/google-cloud-gke-hub/google/cloud/gkehub_v1/services/gke_hub/client.py
+++ b/packages/google-cloud-gke-hub/google/cloud/gkehub_v1/services/gke_hub/client.py
@@ -332,7 +332,7 @@ def get_mtls_endpoint_and_cert_source(
         The API endpoint is determined in the following order:
         (1) if `client_options.api_endpoint` if provided, use the provided one.
         (2) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is "always", use the
-        default mTLS endpoint; if the environment variabel is "never", use the default API
+        default mTLS endpoint; if the environment variable is "never", use the default API
         endpoint; otherwise if client cert source exists, use the default mTLS endpoint, otherwise
         use the default API endpoint.
 
diff --git a/packages/google-cloud-gke-hub/google/cloud/gkehub_v1beta1/services/gke_hub_membership_service/async_client.py b/packages/google-cloud-gke-hub/google/cloud/gkehub_v1beta1/services/gke_hub_membership_service/async_client.py
index 1a6e9a4a9fe6..b6b0d0f10f01 100644
--- a/packages/google-cloud-gke-hub/google/cloud/gkehub_v1beta1/services/gke_hub_membership_service/async_client.py
+++ b/packages/google-cloud-gke-hub/google/cloud/gkehub_v1beta1/services/gke_hub_membership_service/async_client.py
@@ -160,7 +160,7 @@ def get_mtls_endpoint_and_cert_source(
         The API endpoint is determined in the following order:
         (1) if `client_options.api_endpoint` if provided, use the provided one.
         (2) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is "always", use the
-        default mTLS endpoint; if the environment variabel is "never", use the default API
+        default mTLS endpoint; if the environment variable is "never", use the default API
         endpoint; otherwise if client cert source exists, use the default mTLS endpoint, otherwise
         use the default API endpoint.
 
diff --git a/packages/google-cloud-gke-hub/google/cloud/gkehub_v1beta1/services/gke_hub_membership_service/client.py b/packages/google-cloud-gke-hub/google/cloud/gkehub_v1beta1/services/gke_hub_membership_service/client.py
index 00d257fe6b9e..8b56239ab1bb 100644
--- a/packages/google-cloud-gke-hub/google/cloud/gkehub_v1beta1/services/gke_hub_membership_service/client.py
+++ b/packages/google-cloud-gke-hub/google/cloud/gkehub_v1beta1/services/gke_hub_membership_service/client.py
@@ -312,7 +312,7 @@ def get_mtls_endpoint_and_cert_source(
         The API endpoint is determined in the following order:
         (1) if `client_options.api_endpoint` if provided, use the provided one.
         (2) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is "always", use the
-        default mTLS endpoint; if the environment variabel is "never", use the default API
+        default mTLS endpoint; if the environment variable is "never", use the default API
         endpoint; otherwise if client cert source exists, use the default mTLS endpoint, otherwise
         use the default API endpoint.
 
diff --git a/packages/google-cloud-gke-hub/samples/generated_samples/snippet_metadata_google.cloud.gkehub.v1.json b/packages/google-cloud-gke-hub/samples/generated_samples/snippet_metadata_google.cloud.gkehub.v1.json
index 9b0d5a2e7377..f5d7aaa2ae7a 100644
--- a/packages/google-cloud-gke-hub/samples/generated_samples/snippet_metadata_google.cloud.gkehub.v1.json
+++ b/packages/google-cloud-gke-hub/samples/generated_samples/snippet_metadata_google.cloud.gkehub.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-gke-hub",
-    "version": "1.6.0"
+    "version": "0.1.0"
   },
   "snippets": [
     {
diff --git a/packages/google-cloud-gke-hub/samples/generated_samples/snippet_metadata_google.cloud.gkehub.v1beta1.json b/packages/google-cloud-gke-hub/samples/generated_samples/snippet_metadata_google.cloud.gkehub.v1beta1.json
index 56d6645ff4bd..5f7f541e37e3 100644
--- a/packages/google-cloud-gke-hub/samples/generated_samples/snippet_metadata_google.cloud.gkehub.v1beta1.json
+++ b/packages/google-cloud-gke-hub/samples/generated_samples/snippet_metadata_google.cloud.gkehub.v1beta1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-gke-hub",
-    "version": "1.6.0"
+    "version": "0.1.0"
   },
   "snippets": [
     {
diff --git a/packages/google-cloud-gke-hub/setup.py b/packages/google-cloud-gke-hub/setup.py
index 0d20afaf0a98..9a8028b927f5 100644
--- a/packages/google-cloud-gke-hub/setup.py
+++ b/packages/google-cloud-gke-hub/setup.py
@@ -38,6 +38,7 @@
 dependencies = [
     "google-api-core[grpc] >= 1.34.0, <3.0.0dev,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.*,!=2.4.*,!=2.5.*,!=2.6.*,!=2.7.*,!=2.8.*,!=2.9.*,!=2.10.*",
     "proto-plus >= 1.22.0, <2.0.0dev",
+    "proto-plus >= 1.22.2, <2.0.0dev; python_version>='3.11'",
     "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",
     "grpc-google-iam-v1 >=0.12.4, <1.0.0dev",
 ]
@@ -78,6 +79,7 @@
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
         "Operating System :: OS Independent",
         "Topic :: Internet",
     ],
diff --git a/packages/google-cloud-gke-hub/testing/constraints-3.12.txt b/packages/google-cloud-gke-hub/testing/constraints-3.12.txt
new file mode 100644
index 000000000000..ed7f9aed2559
--- /dev/null
+++ b/packages/google-cloud-gke-hub/testing/constraints-3.12.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