diff --git a/third_party/3/orjson.pyi b/third_party/3/orjson.pyi
index 439adae1d..cd35c5f0a 100644
--- a/third_party/3/orjson.pyi
+++ b/third_party/3/orjson.pyi
@@ -3,7 +3,7 @@ from typing import Any, Callable, Optional, Union
 __version__ = str
 
 def dumps(
-    obj: Any,
+    __obj: Any,
     default: Optional[Callable[[Any], Any]] = ...,
     option: Optional[int] = ...,
 ) -> bytes: ...