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-rw-r--r--sphinx/util/osutil.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/sphinx/util/osutil.py b/sphinx/util/osutil.py
index 646a92f1b..6a070a27a 100644
--- a/sphinx/util/osutil.py
+++ b/sphinx/util/osutil.py
@@ -24,7 +24,7 @@ from sphinx.deprecation import RemovedInSphinx30Warning, RemovedInSphinx40Warnin
if False:
# For type annotation
- from typing import Any, Iterator, List, Tuple, Union # NOQA
+ from typing import Any, Iterator, List, Tuple # NOQA
# Errnos that we need.
EEXIST = getattr(errno, 'EEXIST', 0) # RemovedInSphinx40Warning