diff --git a/stubs/Pillow/PIL/ImageFile.pyi b/stubs/Pillow/PIL/ImageFile.pyi
index 303f96134..f78d8690e 100644
--- a/stubs/Pillow/PIL/ImageFile.pyi
+++ b/stubs/Pillow/PIL/ImageFile.pyi
@@ -75,7 +75,7 @@ class PyDecoder:
     def init(self, args) -> None: ...
     @property
     def pulls_fd(self): ...
-    def decode(self, buffer) -> None: ...
+    def decode(self, buffer) -> tuple[int, int]: ...
     def cleanup(self) -> None: ...
     def setfd(self, fd) -> None: ...
     def setimage(self, im, extents: Incomplete | None = None) -> None: ...