Run pyupgrade (#11070)

1 files changed, 3 insertions, 3 deletions

diff --git a/sphinx/util/fileutil.py b/sphinx/util/fileutil.py
index c9c50e84a..03928710e 100644
--- a/sphinx/util/fileutil.py
+++ b/sphinx/util/fileutil.py
@@ -4,7 +4,7 @@ from __future__ import annotations
 
 import os
 import posixpath
-from typing import TYPE_CHECKING, Callable, Optional
+from typing import TYPE_CHECKING, Callable
 
 from docutils.utils import relative_path
 
@@ -17,7 +17,7 @@ if TYPE_CHECKING:
 
 def copy_asset_file(source: str, destination: str,
                     context: dict | None = None,
-                    renderer: Optional["BaseRenderer"] = None) -> None:
+                    renderer: BaseRenderer | None = None) -> None:
     """Copy an asset file to destination.
 
     On copying, it expands the template variables if context argument is given and
@@ -50,7 +50,7 @@ def copy_asset_file(source: str, destination: str,
 
 
 def copy_asset(source: str, destination: str, excluded: PathMatcher = lambda path: False,
-               context: dict | None = None, renderer: Optional["BaseRenderer"] = None,
+               context: dict | None = None, renderer: BaseRenderer | None = None,
                onerror: Callable[[str, Exception], None] | None = None) -> None:
     """Copy asset files to destination recursively.