diff --git a/pyproject.toml b/pyproject.toml
index d93f8064f..c8ceb5c5c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -81,7 +81,7 @@ docs = [
     "sphinxcontrib-websupport",
 ]
 lint = [
-    "ruff==0.9.4",
+    "ruff==0.9.5",
     "mypy==1.14.1",
     "sphinx-lint>=0.9",
     "types-colorama==0.4.15.20240311",
diff --git a/sphinx/_cli/util/colour.py b/sphinx/_cli/util/colour.py
index 5ad8c2796..355b70133 100644
--- a/sphinx/_cli/util/colour.py
+++ b/sphinx/_cli/util/colour.py
@@ -5,7 +5,8 @@ from __future__ import annotations
 import sys
 from os import environ as _environ
 
-if False:
+TYPE_CHECKING = False
+if TYPE_CHECKING:
     from collections.abc import Callable
 
 if sys.platform == 'win32':
diff --git a/sphinx/util/display.py b/sphinx/util/display.py
index 196b0f128..1edca4e6c 100644
--- a/sphinx/util/display.py
+++ b/sphinx/util/display.py
@@ -6,7 +6,8 @@ from sphinx._cli.util.colour import bold, terminal_supports_colour
 from sphinx.locale import __
 from sphinx.util import logging
 
-if False:
+TYPE_CHECKING = False
+if TYPE_CHECKING:
     from collections.abc import Callable, Iterable, Iterator
     from types import TracebackType
     from typing import Any, ParamSpec, TypeVar