diff --git a/dddpy/domain/todo/entities/todo.py b/dddpy/domain/todo/entities/todo.py
index e3899d3..663371a 100644
--- a/dddpy/domain/todo/entities/todo.py
+++ b/dddpy/domain/todo/entities/todo.py
@@ -30,8 +30,8 @@ def __init__(
         title: TodoTitle,
         description: Optional[TodoDescription] = None,
         status: TodoStatus = TodoStatus.NOT_STARTED,
-        created_at: datetime = datetime.now(),
-        updated_at: datetime = datetime.now(),
+        created_at: Optional[datetime] = None,
+        updated_at: Optional[datetime] = None,
         completed_at: Optional[datetime] = None,
     ):
         """Initialize a todo domain entity.
@@ -49,8 +49,8 @@ def __init__(
         self._title = title
         self._description = description
         self._status = status
-        self._created_at = created_at
-        self._updated_at = updated_at
+        self._created_at = created_at or datetime.now()
+        self._updated_at = updated_at or datetime.now()
         self._completed_at = completed_at
 
     def __eq__(self, obj: object) -> bool: