diff --git a/google/cloud/optimization_v1/services/fleet_routing/async_client.py b/google/cloud/optimization_v1/services/fleet_routing/async_client.py
index cbae5cc..b071131 100644
--- a/google/cloud/optimization_v1/services/fleet_routing/async_client.py
+++ b/google/cloud/optimization_v1/services/fleet_routing/async_client.py
@@ -519,7 +519,7 @@ async def get_operation(
         # Done; return the response.
         return response
 
-    async def __aenter__(self):
+    async def __aenter__(self) -> "FleetRoutingAsyncClient":
         return self
 
     async def __aexit__(self, exc_type, exc, tb):
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.optimization.v1.json b/samples/generated_samples/snippet_metadata_google.cloud.optimization.v1.json
index 6d95bf2..d38082d 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.optimization.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.optimization.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-optimization",
-    "version": "1.4.1"
+    "version": "0.1.0"
   },
   "snippets": [
     {