diff --git a/src/excelalchemy/config.py b/src/excelalchemy/config.py
index aca1a13..64a0480 100644
--- a/src/excelalchemy/config.py
+++ b/src/excelalchemy/config.py
@@ -114,9 +114,7 @@ class ImporterConfig[ContextT, ImportCreateModelT: BaseModel, ImportUpdateModelT
     locale: str = 'zh-CN'
 
     sheet_name: str = 'Sheet1'
-    schema_options: ImporterSchemaOptions[ImportCreateModelT, ImportUpdateModelT] = field(
-        init=False, repr=False
-    )
+    schema_options: ImporterSchemaOptions[ImportCreateModelT, ImportUpdateModelT] = field(init=False, repr=False)
     behavior: ImportBehavior[ContextT] = field(init=False, repr=False)
     storage_options: StorageOptions = field(init=False, repr=False)
 
diff --git a/src/excelalchemy/metadata.py b/src/excelalchemy/metadata.py
index 55bc8cc..ac0eda3 100644
--- a/src/excelalchemy/metadata.py
+++ b/src/excelalchemy/metadata.py
@@ -73,9 +73,7 @@ class WorkbookPresentationMeta:
 
     character_set: set[CharacterSet] = field(default_factory=lambda: set(CharacterSet))
     fraction_digits: int | None = None
-    timezone: datetime.timezone = field(
-        default_factory=lambda: datetime.timezone(datetime.timedelta(hours=8), 'CST')
-    )
+    timezone: datetime.timezone = field(default_factory=lambda: datetime.timezone(datetime.timedelta(hours=8), 'CST'))
     date_format: DateFormat | None = None
     date_range_option: DataRangeOption | None = None
     options: list[Option] | None = None