diff --git a/google/cloud/container_v1/types/cluster_service.py b/google/cloud/container_v1/types/cluster_service.py
index e9736f69..f7466deb 100644
--- a/google/cloud/container_v1/types/cluster_service.py
+++ b/google/cloud/container_v1/types/cluster_service.py
@@ -1808,6 +1808,12 @@ class IPAllocationPolicy(proto.Message):
         ipv6_access_type (google.cloud.container_v1.types.IPv6AccessType):
             The ipv6 access type (internal or external) when
             create_subnetwork is true
+        subnet_ipv6_cidr_block (str):
+            Output only. [Output only] The subnet's IPv6 CIDR block used
+            by nodes and pods.
+        services_ipv6_cidr_block (str):
+            Output only. [Output only] The services IPv6 CIDR block for
+            the cluster.
     """
 
     use_ip_aliases: bool = proto.Field(
@@ -1872,6 +1878,14 @@ class IPAllocationPolicy(proto.Message):
         number=17,
         enum="IPv6AccessType",
     )
+    subnet_ipv6_cidr_block: str = proto.Field(
+        proto.STRING,
+        number=22,
+    )
+    services_ipv6_cidr_block: str = proto.Field(
+        proto.STRING,
+        number=23,
+    )
 
 
 class Cluster(proto.Message):
diff --git a/samples/generated_samples/snippet_metadata_google.container.v1.json b/samples/generated_samples/snippet_metadata_google.container.v1.json
index 734fca89..34c1cf39 100644
--- a/samples/generated_samples/snippet_metadata_google.container.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.container.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-container",
-    "version": "2.16.0"
+    "version": "0.1.0"
   },
   "snippets": [
     {
diff --git a/samples/generated_samples/snippet_metadata_google.container.v1beta1.json b/samples/generated_samples/snippet_metadata_google.container.v1beta1.json
index 5036ca36..15a96218 100644
--- a/samples/generated_samples/snippet_metadata_google.container.v1beta1.json
+++ b/samples/generated_samples/snippet_metadata_google.container.v1beta1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-container",
-    "version": "2.16.0"
+    "version": "0.1.0"
   },
   "snippets": [
     {