diff --git a/spotinst_sdk2/clients/ocean/__init__.py b/spotinst_sdk2/clients/ocean/__init__.py
index cd769c2b..ca02fa07 100644
--- a/spotinst_sdk2/clients/ocean/__init__.py
+++ b/spotinst_sdk2/clients/ocean/__init__.py
@@ -2586,9 +2586,9 @@ def update_right_sizing_rule(self, ocean_id: str,
                                  restart_replicas: right_sizing_ocean.RestartReplicas,
                                  exclude_preliminary_recommendations: bool,
                                  application_intervals: List[right_sizing_ocean.RecommendationApplicationInterval],
-                                 application_min_threshold: right_sizing_ocean.RecommendationApplicationMinThreshold,
-                                 application_boundaries: right_sizing_ocean.RecommendationApplicationBoundaries,
-                                 application_overhead_values: right_sizing_ocean.RecommendationApplicationOverheadValues,
+                                 application_min_threshold: right_sizing_ocean.RecommendationApplicationMinThreshold = None,
+                                 application_boundaries: right_sizing_ocean.RecommendationApplicationBoundaries = None,
+                                 application_overhead_values: right_sizing_ocean.RecommendationApplicationOverheadValues = None,
                                  application_hpa: right_sizing_ocean.RecommendationApplicationHPA = None):
         """
         Update a right sizing rule for an Ocean cluster.