diff --git a/thehive4py/types/task.py b/thehive4py/types/task.py
index f4563d71..3143a265 100644
--- a/thehive4py/types/task.py
+++ b/thehive4py/types/task.py
@@ -15,6 +15,7 @@ class InputTask(InputTaskRequired, total=False):
     order: int
     dueDate: int
     assignee: str
+    mandatory: bool
 
 
 class OutputTaskRequired(TypedDict):