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-rw-r--r--sphinx/util/math.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/sphinx/util/math.py b/sphinx/util/math.py
index 121c606c5..bac197d7a 100644
--- a/sphinx/util/math.py
+++ b/sphinx/util/math.py
@@ -1,5 +1,7 @@
"""Utility functions for math."""
+from __future__ import annotations
+
from typing import Optional
from docutils import nodes