https://github.com/sphinx-doc/sphinx/commit/865b513cf2c88d3e30450718914aa896d90fd14e

--- sphinx-7.4.7/sphinx/highlighting.py.orig
+++ sphinx-7.4.7/sphinx/highlighting.py
@@ -6,6 +6,7 @@
 from importlib import import_module
 from typing import TYPE_CHECKING, Any
 
+import pygments
 from pygments import highlight
 from pygments.filters import ErrorToken
 from pygments.formatters import HtmlFormatter, LatexFormatter
@@ -30,6 +31,11 @@
     from pygments.lexer import Lexer
     from pygments.style import Style
 
+if tuple(map(int, pygments.__version__.split('.')))[:2] < (2, 18):
+    from pygments.formatter import Formatter
+
+    Formatter.__class_getitem__ = lambda cls, name: cls
+
 logger = logging.getLogger(__name__)
 
 lexers: dict[str, Lexer] = {}
--- sphinx-7.4.7/tests/test_highlighting.py.orig
+++ sphinx-7.4.7/tests/test_highlighting.py
@@ -2,12 +2,17 @@
 
 from unittest import mock
 
+import pygments
 from pygments.formatters.html import HtmlFormatter
 from pygments.lexer import RegexLexer
 from pygments.token import Name, Text
 
 from sphinx.highlighting import PygmentsBridge
 
+if tuple(map(int, pygments.__version__.split('.')))[:2] < (2, 18):
+    from pygments.formatter import Formatter
+    Formatter.__class_getitem__ = lambda cls, name: cls
+
 
 class MyLexer(RegexLexer):
     name = 'testlexer'