diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 0d1bebe..093be7e 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.6.0"
+  ".": "1.6.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 05f094e..e9cb268 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## [1.6.1](https://github.com/googleapis/python-service-usage/compare/v1.6.0...v1.6.1) (2023-01-23)
+
+
+### Bug Fixes
+
+* Add context manager return types ([d7c14ed](https://github.com/googleapis/python-service-usage/commit/d7c14ed360824d12122c00f527453ae564e047de))
+
+
+### Documentation
+
+* Add documentation for enums ([d7c14ed](https://github.com/googleapis/python-service-usage/commit/d7c14ed360824d12122c00f527453ae564e047de))
+
 ## [1.6.0](https://github.com/googleapis/python-service-usage/compare/v1.5.0...v1.6.0) (2023-01-10)
 
 
diff --git a/google/cloud/service_usage/gapic_version.py b/google/cloud/service_usage/gapic_version.py
index a016bdf..b4028ab 100644
--- a/google/cloud/service_usage/gapic_version.py
+++ b/google/cloud/service_usage/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "1.6.0"  # {x-release-please-version}
+__version__ = "1.6.1"  # {x-release-please-version}
diff --git a/google/cloud/service_usage_v1/gapic_version.py b/google/cloud/service_usage_v1/gapic_version.py
index a016bdf..b4028ab 100644
--- a/google/cloud/service_usage_v1/gapic_version.py
+++ b/google/cloud/service_usage_v1/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "1.6.0"  # {x-release-please-version}
+__version__ = "1.6.1"  # {x-release-please-version}
diff --git a/google/cloud/service_usage_v1/services/service_usage/client.py b/google/cloud/service_usage_v1/services/service_usage/client.py
index ceee76a..dcf55b8 100644
--- a/google/cloud/service_usage_v1/services/service_usage/client.py
+++ b/google/cloud/service_usage_v1/services/service_usage/client.py
@@ -990,7 +990,7 @@ def sample_batch_get_services():
         # Done; return the response.
         return response
 
-    def __enter__(self):
+    def __enter__(self) -> "ServiceUsageClient":
         return self
 
     def __exit__(self, type, value, traceback):
diff --git a/google/cloud/service_usage_v1/types/resources.py b/google/cloud/service_usage_v1/types/resources.py
index eb88244..fe594c5 100644
--- a/google/cloud/service_usage_v1/types/resources.py
+++ b/google/cloud/service_usage_v1/types/resources.py
@@ -39,6 +39,21 @@
 class State(proto.Enum):
     r"""Whether or not a service has been enabled for use by a
     consumer.
+
+    Values:
+        STATE_UNSPECIFIED (0):
+            The default value, which indicates that the
+            enabled state of the service is unspecified or
+            not meaningful. Currently, all consumers other
+            than projects (such as folders and
+            organizations) are always in this state.
+        DISABLED (1):
+            The service cannot be used by this consumer.
+            It has either been explicitly disabled, or has
+            never been enabled.
+        ENABLED (2):
+            The service has been explicitly enabled for
+            use by this consumer.
     """
     STATE_UNSPECIFIED = 0
     DISABLED = 1
diff --git a/google/cloud/service_usage_v1/types/serviceusage.py b/google/cloud/service_usage_v1/types/serviceusage.py
index eb62903..f95f447 100644
--- a/google/cloud/service_usage_v1/types/serviceusage.py
+++ b/google/cloud/service_usage_v1/types/serviceusage.py
@@ -107,6 +107,18 @@ class DisableServiceRequest(proto.Message):
     class CheckIfServiceHasUsage(proto.Enum):
         r"""Enum to determine if service usage should be checked when
         disabling a service.
+
+        Values:
+            CHECK_IF_SERVICE_HAS_USAGE_UNSPECIFIED (0):
+                When unset, the default behavior is used,
+                which is SKIP.
+            SKIP (1):
+                If set, skip checking service usage when
+                disabling a service.
+            CHECK (2):
+                If set, service usage is checked when disabling the service.
+                If a service, or its dependents, has usage in the last 30
+                days, the request returns a FAILED_PRECONDITION error.
         """
         CHECK_IF_SERVICE_HAS_USAGE_UNSPECIFIED = 0
         SKIP = 1
diff --git a/samples/generated_samples/snippet_metadata_google.api.serviceusage.v1.json b/samples/generated_samples/snippet_metadata_google.api.serviceusage.v1.json
index f01ce38..4c885d0 100644
--- a/samples/generated_samples/snippet_metadata_google.api.serviceusage.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.api.serviceusage.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-service-usage",
-    "version": "1.6.0"
+    "version": "1.6.1"
   },
   "snippets": [
     {