diff --git a/stdlib/@tests/stubtest_allowlists/py314.txt b/stdlib/@tests/stubtest_allowlists/py314.txt
index a5d3a39e6..9c452cd70 100644
--- a/stdlib/@tests/stubtest_allowlists/py314.txt
+++ b/stdlib/@tests/stubtest_allowlists/py314.txt
@@ -23,7 +23,6 @@ _socket.if_indextoname
 _ssl.HAS_PHA
 _thread.RLock.locked
 _thread.set_name
-argparse.HelpFormatter.__init__
 ast.Interpolation
 ast.TemplateStr
 asyncio.__all__
diff --git a/stdlib/argparse.pyi b/stdlib/argparse.pyi
index 32beaff14..0c84f52ff 100644
--- a/stdlib/argparse.pyi
+++ b/stdlib/argparse.pyi
@@ -130,22 +130,44 @@ class ArgumentParser(_AttributeHolder, _ActionsContainer):
     _subparsers: _ArgumentGroup | None
 
     # Note: the constructor arguments are also used in _SubParsersAction.add_parser.
-    def __init__(
-        self,
-        prog: str | None = None,
-        usage: str | None = None,
-        description: str | None = None,
-        epilog: str | None = None,
-        parents: Sequence[ArgumentParser] = [],
-        formatter_class: _FormatterClass = ...,
-        prefix_chars: str = "-",
-        fromfile_prefix_chars: str | None = None,
-        argument_default: Any = None,
-        conflict_handler: str = "error",
-        add_help: bool = True,
-        allow_abbrev: bool = True,
-        exit_on_error: bool = True,
-    ) -> None: ...
+    if sys.version_info >= (3, 14):
+        def __init__(
+            self,
+            prog: str | None = None,
+            usage: str | None = None,
+            description: str | None = None,
+            epilog: str | None = None,
+            parents: Sequence[ArgumentParser] = [],
+            formatter_class: _FormatterClass = ...,
+            prefix_chars: str = "-",
+            fromfile_prefix_chars: str | None = None,
+            argument_default: Any = None,
+            conflict_handler: str = "error",
+            add_help: bool = True,
+            allow_abbrev: bool = True,
+            exit_on_error: bool = True,
+            *,
+            suggest_on_error: bool = False,
+            color: bool = False,
+        ) -> None: ...
+    else:
+        def __init__(
+            self,
+            prog: str | None = None,
+            usage: str | None = None,
+            description: str | None = None,
+            epilog: str | None = None,
+            parents: Sequence[ArgumentParser] = [],
+            formatter_class: _FormatterClass = ...,
+            prefix_chars: str = "-",
+            fromfile_prefix_chars: str | None = None,
+            argument_default: Any = None,
+            conflict_handler: str = "error",
+            add_help: bool = True,
+            allow_abbrev: bool = True,
+            exit_on_error: bool = True,
+        ) -> None: ...
+
     @overload
     def parse_args(self, args: Sequence[str] | None = None, namespace: None = None) -> Namespace: ...
     @overload
@@ -252,7 +274,21 @@ class HelpFormatter:
         def __init__(self, formatter: HelpFormatter, parent: Self | None, heading: str | None = None) -> None: ...
         def format_help(self) -> str: ...
 
-    def __init__(self, prog: str, indent_increment: int = 2, max_help_position: int = 24, width: int | None = None) -> None: ...
+    if sys.version_info >= (3, 14):
+        def __init__(
+            self,
+            prog: str,
+            indent_increment: int = 2,
+            max_help_position: int = 24,
+            width: int | None = None,
+            prefix_chars: str = "-",
+            color: bool = False,
+        ) -> None: ...
+    else:
+        def __init__(
+            self, prog: str, indent_increment: int = 2, max_help_position: int = 24, width: int | None = None
+        ) -> None: ...
+
     def _indent(self) -> None: ...
     def _dedent(self) -> None: ...
     def _add_item(self, func: Callable[..., str], args: Iterable[Any]) -> None: ...
@@ -431,14 +467,30 @@ class Namespace(_AttributeHolder):
     def __eq__(self, other: object) -> bool: ...
     __hash__: ClassVar[None]  # type: ignore[assignment]
 
-class FileType:
-    # undocumented
-    _mode: str
-    _bufsize: int
-    _encoding: str | None
-    _errors: str | None
-    def __init__(self, mode: str = "r", bufsize: int = -1, encoding: str | None = None, errors: str | None = None) -> None: ...
-    def __call__(self, string: str) -> IO[Any]: ...
+if sys.version_info >= (3, 14):
+    @deprecated("Deprecated in Python 3.14; Simply open files after parsing arguments")
+    class FileType:
+        # undocumented
+        _mode: str
+        _bufsize: int
+        _encoding: str | None
+        _errors: str | None
+        def __init__(
+            self, mode: str = "r", bufsize: int = -1, encoding: str | None = None, errors: str | None = None
+        ) -> None: ...
+        def __call__(self, string: str) -> IO[Any]: ...
+
+else:
+    class FileType:
+        # undocumented
+        _mode: str
+        _bufsize: int
+        _encoding: str | None
+        _errors: str | None
+        def __init__(
+            self, mode: str = "r", bufsize: int = -1, encoding: str | None = None, errors: str | None = None
+        ) -> None: ...
+        def __call__(self, string: str) -> IO[Any]: ...
 
 # undocumented
 class _ArgumentGroup(_ActionsContainer):