diff --git a/stdlib/tempfile.pyi b/stdlib/tempfile.pyi
index 3ae8cca39..d31fd74d3 100644
--- a/stdlib/tempfile.pyi
+++ b/stdlib/tempfile.pyi
@@ -264,6 +264,8 @@ class _TemporaryFileWrapper(IO[AnyStr]):
     def writelines(self: _TemporaryFileWrapper[bytes], lines: Iterable[ReadableBuffer]) -> None: ...
     @overload
     def writelines(self, lines: Iterable[AnyStr]) -> None: ...
+    @property
+    def closed(self) -> bool: ...
 
 if sys.version_info >= (3, 11):
     _SpooledTemporaryFileBase = io.IOBase