diff --git a/azure/durable_functions/models/actions/CallSubOrchestratorAction.py b/azure/durable_functions/models/actions/CallSubOrchestratorAction.py
index 16b4c853..aebf26fe 100644
--- a/azure/durable_functions/models/actions/CallSubOrchestratorAction.py
+++ b/azure/durable_functions/models/actions/CallSubOrchestratorAction.py
@@ -36,5 +36,5 @@ def to_json(self) -> Dict[str, Union[str, int]]:
         add_attrib(json_dict, self, 'action_type', 'actionType')
         add_attrib(json_dict, self, 'function_name', 'functionName')
         add_attrib(json_dict, self, '_input', 'input')
-        add_attrib(json_dict, self, 'instance_id', 'instance_id')
+        add_attrib(json_dict, self, 'instance_id', 'instanceId')
         return json_dict
diff --git a/azure/durable_functions/models/actions/CallSubOrchestratorWithRetryAction.py b/azure/durable_functions/models/actions/CallSubOrchestratorWithRetryAction.py
index 07b0ba55..9f529a0b 100644
--- a/azure/durable_functions/models/actions/CallSubOrchestratorWithRetryAction.py
+++ b/azure/durable_functions/models/actions/CallSubOrchestratorWithRetryAction.py
@@ -40,5 +40,5 @@ def to_json(self) -> Dict[str, Union[str, int]]:
         add_attrib(json_dict, self, 'function_name', 'functionName')
         add_attrib(json_dict, self, '_input', 'input')
         add_json_attrib(json_dict, self, 'retry_options', 'retryOptions')
-        add_attrib(json_dict, self, 'instance_id', 'instance_id')
+        add_attrib(json_dict, self, 'instance_id', 'instanceId')
         return json_dict