diff --git a/stdlib/2/sys.pyi b/stdlib/2/sys.pyi
index be688f5b4..f8651abdb 100644
--- a/stdlib/2/sys.pyi
+++ b/stdlib/2/sys.pyi
@@ -89,8 +89,8 @@ last_traceback: TracebackType
 meta_path: List[Any]
 path_hooks: List[Any]
 path_importer_cache: Dict[str, Any]
-displayhook: Optional[Callable[[int], None]]
-excepthook: Optional[Callable[[type, BaseException, TracebackType], None]]
+displayhook: Callable[[object], Any]
+excepthook: Callable[[Type[BaseException], BaseException, TracebackType], Any]
 exc_type: Optional[type]
 exc_value: Union[BaseException, ClassType]
 exc_traceback: TracebackType
@@ -112,7 +112,7 @@ def _clear_type_cache() -> None: ...
 def _current_frames() -> Dict[int, FrameType]: ...
 def _getframe(depth: int = ...) -> FrameType: ...
 def call_tracing(fn: Any, args: Any) -> Any: ...
-def __displayhook__(value: int) -> None: ...
+def __displayhook__(value: object) -> None: ...
 def __excepthook__(type_: type, value: BaseException, traceback: TracebackType) -> None: ...
 def exc_clear() -> None: ...
 def exc_info() -> _OptExcInfo: ...
diff --git a/stdlib/3/sys.pyi b/stdlib/3/sys.pyi
index 3d17a55c9..f78826c65 100644
--- a/stdlib/3/sys.pyi
+++ b/stdlib/3/sys.pyi
@@ -28,8 +28,8 @@ builtin_module_names: Sequence[str]  # actually a tuple of strings
 copyright: str
 # dllhandle = 0  # Windows only
 dont_write_bytecode: bool
-__displayhook__: Any  # contains the original value of displayhook
-__excepthook__: Any  # contains the original value of excepthook
+displayhook: Callable[[object], Any]
+excepthook: Callable[[Type[BaseException], BaseException, TracebackType], Any]
 exec_prefix: str
 executable: str
 float_repr_style: str
@@ -131,9 +131,9 @@ def call_tracing(fn: Callable[..., _T], args: Any) -> _T: ...
 def _clear_type_cache() -> None: ...
 def _current_frames() -> Dict[int, Any]: ...
 def _debugmallocstats() -> None: ...
-def displayhook(value: Optional[int]) -> None: ...
-def excepthook(type_: Type[BaseException], value: BaseException,
-               traceback: TracebackType) -> None: ...
+def __displayhook__(value: object) -> None: ...
+def __excepthook__(type_: Type[BaseException], value: BaseException,
+                   traceback: TracebackType) -> None: ...
 def exc_info() -> _OptExcInfo: ...
 # sys.exit() accepts an optional argument of anything printable
 def exit(arg: object = ...) -> NoReturn: ...