diff --git a/google/cloud/container_v1/types/cluster_service.py b/google/cloud/container_v1/types/cluster_service.py
index 2d9ae458..c4547265 100644
--- a/google/cloud/container_v1/types/cluster_service.py
+++ b/google/cloud/container_v1/types/cluster_service.py
@@ -2633,6 +2633,12 @@ class ClusterUpdate(proto.Message):
         desired_node_pool_logging_config (google.cloud.container_v1.types.NodePoolLoggingConfig):
             The desired node pool logging configuration
             defaults for the cluster.
+        desired_stack_type (google.cloud.container_v1.types.StackType):
+            The desired stack type of the cluster.
+            If a stack type is provided and does not match
+            the current stack type of the cluster, update
+            will attempt to change the stack type to the new
+            type.
     """
 
     desired_node_version: str = proto.Field(
@@ -2820,6 +2826,11 @@ class ClusterUpdate(proto.Message):
         number=116,
         message="NodePoolLoggingConfig",
     )
+    desired_stack_type: "StackType" = proto.Field(
+        proto.ENUM,
+        number=119,
+        enum="StackType",
+    )
 
 
 class Operation(proto.Message):