diff --git a/app/manga/schemas.py b/app/manga/schemas.py
index 907431b..36f4522 100644
--- a/app/manga/schemas.py
+++ b/app/manga/schemas.py
@@ -1,3 +1,4 @@
+from pydantic import field_validator
 from app.schemas import datetime_pd
 from app import constants