diff --git a/stdlib/threading.pyi b/stdlib/threading.pyi
index b9b44e0be..0ed292f4c 100644
--- a/stdlib/threading.pyi
+++ b/stdlib/threading.pyi
@@ -168,7 +168,7 @@ class _RLock:
     __enter__ = acquire
     def __exit__(
         self, exc_type: type[BaseException] | None, exc_val: BaseException | None, exc_tb: TracebackType | None
-    ) -> bool | None: ...
+    ) -> None: ...
 
 RLock = _RLock
 
@@ -190,7 +190,7 @@ class Semaphore:
     def __init__(self, value: int = ...) -> None: ...
     def __exit__(
         self, exc_type: type[BaseException] | None, exc_val: BaseException | None, exc_tb: TracebackType | None
-    ) -> bool | None: ...
+    ) -> None: ...
     def acquire(self, blocking: bool = ..., timeout: float | None = ...) -> bool: ...
     def __enter__(self, blocking: bool = ..., timeout: float | None = ...) -> bool: ...
     if sys.version_info >= (3, 9):