diff --git a/django-stubs/core/files/base.pyi b/django-stubs/core/files/base.pyi
index 6c27bbc..2d84fda 100644
--- a/django-stubs/core/files/base.pyi
+++ b/django-stubs/core/files/base.pyi
@@ -14,6 +14,7 @@ class File(FileProxyMixin, IO[Any]):
     def __init__(self, file: Any, name: Optional[str] = ...) -> None: ...
     def __bool__(self) -> bool: ...
     def __len__(self) -> int: ...
+    @property
     def size(self) -> int: ...
     def chunks(self, chunk_size: Optional[int] = ...) -> Iterator[bytes]: ...
     def multiple_chunks(self, chunk_size: Optional[int] = ...) -> bool: ...