diff --git a/stdlib/2and3/_dummy_threading.pyi b/stdlib/2and3/_dummy_threading.pyi
index bd67d850f..5d716f00f 100644
--- a/stdlib/2and3/_dummy_threading.pyi
+++ b/stdlib/2and3/_dummy_threading.pyi
@@ -145,17 +145,7 @@ class Semaphore:
         def acquire(self, blocking: bool = ...) -> bool: ...
     def release(self) -> None: ...
 
-class BoundedSemaphore:
-    def __init__(self, value: int = ...) -> None: ...
-    def __enter__(self) -> bool: ...
-    def __exit__(self, exc_type: Optional[Type[BaseException]],
-                 exc_val: Optional[BaseException],
-                 exc_tb: Optional[TracebackType]) -> Optional[bool]: ...
-    if sys.version_info >= (3,):
-        def acquire(self, blocking: bool = ..., timeout: float = ...) -> bool: ...
-    else:
-        def acquire(self, blocking: bool = ...) -> bool: ...
-    def release(self) -> None: ...
+class BoundedSemaphore(Semaphore): ...
 
 
 class Event:
diff --git a/stdlib/2and3/threading.pyi b/stdlib/2and3/threading.pyi
index bd67d850f..5d716f00f 100644
--- a/stdlib/2and3/threading.pyi
+++ b/stdlib/2and3/threading.pyi
@@ -145,17 +145,7 @@ class Semaphore:
         def acquire(self, blocking: bool = ...) -> bool: ...
     def release(self) -> None: ...
 
-class BoundedSemaphore:
-    def __init__(self, value: int = ...) -> None: ...
-    def __enter__(self) -> bool: ...
-    def __exit__(self, exc_type: Optional[Type[BaseException]],
-                 exc_val: Optional[BaseException],
-                 exc_tb: Optional[TracebackType]) -> Optional[bool]: ...
-    if sys.version_info >= (3,):
-        def acquire(self, blocking: bool = ..., timeout: float = ...) -> bool: ...
-    else:
-        def acquire(self, blocking: bool = ...) -> bool: ...
-    def release(self) -> None: ...
+class BoundedSemaphore(Semaphore): ...
 
 
 class Event:
diff --git a/tests/stubtest_whitelists/py3_common.txt b/tests/stubtest_whitelists/py3_common.txt
index 6460efb49..24f9f99ad 100644
--- a/tests/stubtest_whitelists/py3_common.txt
+++ b/tests/stubtest_whitelists/py3_common.txt
@@ -451,8 +451,6 @@ tempfile.SpooledTemporaryFile.__next__
 tempfile.SpooledTemporaryFile.readable
 tempfile.SpooledTemporaryFile.seekable
 tempfile.SpooledTemporaryFile.writable
-threading.BoundedSemaphore.__enter__
-threading.BoundedSemaphore.acquire
 threading.Condition.acquire
 threading.Condition.release
 threading.Lock