diff --git a/schemas/book.py b/schemas/book.py
index 3234dd4..4e6d3cd 100644
--- a/schemas/book.py
+++ b/schemas/book.py
@@ -2,7 +2,6 @@ from pydantic import BaseModel, Field
 from typing import Optional
 from uuid import UUID
 
-
 class BookBase(BaseModel):
     title: str = Field(..., min_length=1, max_length=200, description="Book title")
     description: Optional[str] = Field(None, description="Book description")
@@ -10,7 +9,6 @@ class BookBase(BaseModel):
     publication_year: int = Field(..., ge=1000, le=9999, description="Year of publication")
     author_id: str = Field(..., description="ID of the book's author")
 
-
 class BookCreate(BookBase):
     class Config:
         schema_extra = {
@@ -23,7 +21,6 @@ class BookCreate(BookBase):
             }
         }
 
-
 class Book(BookBase):
     id: UUID