diff --git a/fastapi_book_server/app/serializers/author.py b/fastapi_book_server/app/serializers/author.py
index 28179cb..2242653 100644
--- a/fastapi_book_server/app/serializers/author.py
+++ b/fastapi_book_server/app/serializers/author.py
@@ -45,4 +45,4 @@ class PageWithAuthorBook(Page[AuthorBook]):
 
 
 class PageWithTranslatedBook(Page[TranslatedBook]):
-    parent_item: TranslatedBook | None
+    parent_item: Author | None
diff --git a/fastapi_book_server/app/views/author.py b/fastapi_book_server/app/views/author.py
index e292917..729661c 100644
--- a/fastapi_book_server/app/views/author.py
+++ b/fastapi_book_server/app/views/author.py
@@ -106,7 +106,7 @@ async def get_author_books(
         page=page.page,
         size=page.size,
         pages=page.pages,
-        parent_item=author,  # type: ignore
+        parent_item=Author.parse_obj(author.dict()) if author else None,
     )
 
 
@@ -154,7 +154,7 @@ async def get_translated_books(
         page=page.page,
         size=page.size,
         pages=page.pages,
-        parent_item=translator,  # type: ignore
+        parent_item=Author.parse_obj(translator.dict()) if translator else None,
     )
 
 
diff --git a/fastapi_book_server/app/views/sequence.py b/fastapi_book_server/app/views/sequence.py
index 88a255c..2e061fe 100644
--- a/fastapi_book_server/app/views/sequence.py
+++ b/fastapi_book_server/app/views/sequence.py
@@ -70,7 +70,7 @@ async def get_sequence_books(
         total=page.total,
         page=page.page,
         size=page.size,
-        parent_item=sequence,  # type: ignore
+        parent_item=Sequence.parse_obj(sequence.dict()) if sequence else None,
     )