diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 4fcfdf7..2b6f978 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.9.0"
+  ".": "1.9.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 740666c..c8990e1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## [1.9.1](https://github.com/googleapis/python-bigquery-connection/compare/v1.9.0...v1.9.1) (2023-01-20)
+
+
+### Bug Fixes
+
+* Add context manager return types ([a62dada](https://github.com/googleapis/python-bigquery-connection/commit/a62dada3529fe2ef72496e3e35f56c7184cfdef0))
+
+
+### Documentation
+
+* Add documentation for enums ([a62dada](https://github.com/googleapis/python-bigquery-connection/commit/a62dada3529fe2ef72496e3e35f56c7184cfdef0))
+
 ## [1.9.0](https://github.com/googleapis/python-bigquery-connection/compare/v1.8.0...v1.9.0) (2023-01-10)
 
 
diff --git a/google/cloud/bigquery_connection/gapic_version.py b/google/cloud/bigquery_connection/gapic_version.py
index 163d151..13f1b4a 100644
--- a/google/cloud/bigquery_connection/gapic_version.py
+++ b/google/cloud/bigquery_connection/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "1.9.0"  # {x-release-please-version}
+__version__ = "1.9.1"  # {x-release-please-version}
diff --git a/google/cloud/bigquery_connection_v1/gapic_version.py b/google/cloud/bigquery_connection_v1/gapic_version.py
index 163d151..13f1b4a 100644
--- a/google/cloud/bigquery_connection_v1/gapic_version.py
+++ b/google/cloud/bigquery_connection_v1/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "1.9.0"  # {x-release-please-version}
+__version__ = "1.9.1"  # {x-release-please-version}
diff --git a/google/cloud/bigquery_connection_v1/services/connection_service/client.py b/google/cloud/bigquery_connection_v1/services/connection_service/client.py
index dd5ac36..a28fb4b 100644
--- a/google/cloud/bigquery_connection_v1/services/connection_service/client.py
+++ b/google/cloud/bigquery_connection_v1/services/connection_service/client.py
@@ -1457,7 +1457,7 @@ def sample_test_iam_permissions():
         # Done; return the response.
         return response
 
-    def __enter__(self):
+    def __enter__(self) -> "ConnectionServiceClient":
         return self
 
     def __exit__(self, type, value, traceback):
diff --git a/google/cloud/bigquery_connection_v1/types/connection.py b/google/cloud/bigquery_connection_v1/types/connection.py
index af12434..f913579 100644
--- a/google/cloud/bigquery_connection_v1/types/connection.py
+++ b/google/cloud/bigquery_connection_v1/types/connection.py
@@ -318,7 +318,16 @@ class CloudSqlProperties(proto.Message):
     """
 
     class DatabaseType(proto.Enum):
-        r"""Supported Cloud SQL database types."""
+        r"""Supported Cloud SQL database types.
+
+        Values:
+            DATABASE_TYPE_UNSPECIFIED (0):
+                Unspecified database type.
+            POSTGRES (1):
+                Cloud SQL for PostgreSQL.
+            MYSQL (2):
+                Cloud SQL for MySQL.
+        """
         DATABASE_TYPE_UNSPECIFIED = 0
         POSTGRES = 1
         MYSQL = 2
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.bigquery.connection.v1.json b/samples/generated_samples/snippet_metadata_google.cloud.bigquery.connection.v1.json
index a5f4349..ca553ce 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.bigquery.connection.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.bigquery.connection.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-bigquery-connection",
-    "version": "1.9.0"
+    "version": "1.9.1"
   },
   "snippets": [
     {
diff --git a/samples/snippets/requirements-test.txt b/samples/snippets/requirements-test.txt
index f70f97a..6dd4693 100644
--- a/samples/snippets/requirements-test.txt
+++ b/samples/snippets/requirements-test.txt
@@ -1,2 +1,2 @@
-pytest==7.2.0
+pytest==7.2.1
 google-cloud-testutils==1.3.3
\ No newline at end of file
diff --git a/samples/snippets/requirements.txt b/samples/snippets/requirements.txt
index eda4342..dc6f190 100644
--- a/samples/snippets/requirements.txt
+++ b/samples/snippets/requirements.txt
@@ -1 +1 @@
-google-cloud-bigquery-connection==1.8.0
\ No newline at end of file
+google-cloud-bigquery-connection==1.9.0
\ No newline at end of file