diff --git a/stdlib/3/functools.pyi b/stdlib/3/functools.pyi
index 3b57064dc8df..10469c183868 100644
--- a/stdlib/3/functools.pyi
+++ b/stdlib/3/functools.pyi
@@ -86,6 +86,7 @@ if sys.version_info >= (3, 8):
         def register(self, cls: Any, method: None = ...) -> Callable[[Callable[..., _T]], Callable[..., _T]]: ...
         @overload
         def register(self, cls: Any, method: Callable[..., _T]) -> Callable[..., _T]: ...
+        def __call__(self, *args: Any, **kwargs: Any) -> _T: ...
 
     class cached_property(Generic[_T]):
         func: Callable[[Any], _T]
diff --git a/tests/stubtest_whitelists/py38.txt b/tests/stubtest_whitelists/py38.txt
index a1bc6b042394..78dab20a38d4 100644
--- a/tests/stubtest_whitelists/py38.txt
+++ b/tests/stubtest_whitelists/py38.txt
@@ -101,6 +101,7 @@ dis.stack_effect
 email.message.MIMEPart.as_string
 enum.Enum._generate_next_value_
 functools.partialmethod.__get__
+functools.singledispatchmethod.__call__  # A lie to reflect that the descriptor get returns a callable
 gettext.install
 gettext.translation
 hmac.compare_digest