diff --git a/nico.py b/nico.py
index 5009a18..94afc34 100644
--- a/nico.py
+++ b/nico.py
@@ -2,6 +2,8 @@
 ニコニコのニジカ動画取得モヂュール
 """
 
+from __future__ import annotations
+
 import os
 from datetime import date, timedelta
 from typing import TypedDict, cast