diff --git a/google/cloud/container_v1/types/cluster_service.py b/google/cloud/container_v1/types/cluster_service.py
index 79450e44..6029eade 100644
--- a/google/cloud/container_v1/types/cluster_service.py
+++ b/google/cloud/container_v1/types/cluster_service.py
@@ -1401,6 +1401,9 @@ class ClusterUpdate(proto.Message):
             default sNAT for this cluster.
         desired_release_channel (google.cloud.container_v1.types.ReleaseChannel):
             The desired release channel configuration.
+        desired_authenticator_groups_config (google.cloud.container_v1.types.AuthenticatorGroupsConfig):
+            The desired authenticator groups config for
+            the cluster.
         desired_master_version (str):
             The Kubernetes version to change the master
             to.
@@ -1464,6 +1467,9 @@ class ClusterUpdate(proto.Message):
     desired_release_channel = proto.Field(
         proto.MESSAGE, number=31, message="ReleaseChannel",
     )
+    desired_authenticator_groups_config = proto.Field(
+        proto.MESSAGE, number=63, message="AuthenticatorGroupsConfig",
+    )
     desired_master_version = proto.Field(proto.STRING, number=100,)