diff --git a/third_party/2and3/yaml/__init__.pyi b/third_party/2and3/yaml/__init__.pyi
index c0fc6a98270c..8af0d23ff4c5 100644
--- a/third_party/2and3/yaml/__init__.pyi
+++ b/third_party/2and3/yaml/__init__.pyi
@@ -23,12 +23,12 @@ def scan(stream, Loader=...): ...
 def parse(stream, Loader=...): ...
 def compose(stream, Loader=...): ...
 def compose_all(stream, Loader=...): ...
-def load(stream: Union[str, IO[str]], Loader=...) -> Any: ...
-def load_all(stream: Union[str, IO[str]], Loader=...) -> Iterator[Any]: ...
-def full_load(stream: Union[str, IO[str]]) -> Any: ...
-def full_load_all(stream: Union[str, IO[str]]) -> Iterator[Any]: ...
-def safe_load(stream: Union[str, IO[str]]) -> Any: ...
-def safe_load_all(stream: Union[str, IO[str]]) -> Iterator[Any]: ...
+def load(stream: Union[bytes, IO[bytes], str, IO[str]], Loader=...) -> Any: ...
+def load_all(stream: Union[bytes, IO[bytes], str, IO[str]], Loader=...) -> Iterator[Any]: ...
+def full_load(stream: Union[bytes, IO[bytes], str, IO[str]]) -> Any: ...
+def full_load_all(stream: Union[bytes, IO[bytes], str, IO[str]]) -> Iterator[Any]: ...
+def safe_load(stream: Union[bytes, IO[bytes], str, IO[str]]) -> Any: ...
+def safe_load_all(stream: Union[bytes, IO[bytes], str, IO[str]]) -> Iterator[Any]: ...
 def emit(events, stream=..., Dumper=..., canonical=..., indent=..., width=..., allow_unicode=..., line_break=...): ...
 
 @overload