diff --git a/docs/changelog/3523.bugfix.rst b/docs/changelog/3523.bugfix.rst
new file mode 100644
index 000000000..3052d877e
--- /dev/null
+++ b/docs/changelog/3523.bugfix.rst
@@ -0,0 +1 @@
+Fix ``TypeError`` for ``HelpFormatter`` with Python 3.14
diff --git a/src/tox/config/cli/parser.py b/src/tox/config/cli/parser.py
index 87629ae49..904ff7aad 100644
--- a/src/tox/config/cli/parser.py
+++ b/src/tox/config/cli/parser.py
@@ -95,8 +95,8 @@ def parse_args(  # type: ignore[override] # avoid defining all overloads
 class HelpFormatter(ArgumentDefaultsHelpFormatter):
     """A help formatter that provides the default value and the source it comes from."""
 
-    def __init__(self, prog: str) -> None:
-        super().__init__(prog, max_help_position=30, width=240)
+    def __init__(self, prog: str, **kwargs: Any) -> None:
+        super().__init__(prog, max_help_position=30, width=240, **kwargs)
 
     def _get_help_string(self, action: Action) -> str | None:
         text: str = super()._get_help_string(action) or ""