diff --git a/stdlib/faulthandler.pyi b/stdlib/faulthandler.pyi
index 7b42b8ec8..320a8b6fa 100644
--- a/stdlib/faulthandler.pyi
+++ b/stdlib/faulthandler.pyi
@@ -10,4 +10,4 @@ def is_enabled() -> bool: ...
 
 if sys.platform != "win32":
     def register(signum: int, file: FileDescriptorLike = ..., all_threads: bool = ..., chain: bool = ...) -> None: ...
-    def unregister(signum: int) -> None: ...
+    def unregister(signum: int, /) -> None: ...