diff --git a/lark_oapi/api/contact/v3/model/children_department_request.py b/lark_oapi/api/contact/v3/model/children_department_request.py
index 22888b9ae..90144436c 100644
--- a/lark_oapi/api/contact/v3/model/children_department_request.py
+++ b/lark_oapi/api/contact/v3/model/children_department_request.py
@@ -13,7 +13,7 @@ def __init__(self) -> None:
         self.fetch_child: Optional[bool] = None
         self.page_size: Optional[int] = None
         self.page_token: Optional[str] = None
-        self.department_id: Optional[int] = None
+        self.department_id: Optional[str] = None
 
     @staticmethod
     def builder() -> "ChildrenDepartmentRequestBuilder":
@@ -54,9 +54,9 @@ def page_token(self, page_token: str) -> "ChildrenDepartmentRequestBuilder":
         self._children_department_request.add_query("page_token", page_token)
         return self
 
-    def department_id(self, department_id: int) -> "ChildrenDepartmentRequestBuilder":
+    def department_id(self, department_id: str) -> "ChildrenDepartmentRequestBuilder":
         self._children_department_request.department_id = department_id
-        self._children_department_request.paths["department_id"] = str(department_id)
+        self._children_department_request.paths["department_id"] = department_id
         return self
 
     def build(self) -> ChildrenDepartmentRequest: