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-rw-r--r--sphinx/writers/_html4.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/sphinx/writers/_html4.py b/sphinx/writers/_html4.py
index 4ff2ebd3a..4e996d152 100644
--- a/sphinx/writers/_html4.py
+++ b/sphinx/writers/_html4.py
@@ -1,5 +1,7 @@
"""Frozen HTML 4 translator."""
+from __future__ import annotations
+
import os
import posixpath
import re