diff --git a/py-polars/polars/_typing.py b/py-polars/polars/_typing.py
index 1c404a670f96..894ab9e79346 100644
--- a/py-polars/polars/_typing.py
+++ b/py-polars/polars/_typing.py
@@ -298,12 +298,5 @@ def fetchmany(self, *args: Any, **kwargs: Any) -> Any:
 EngineType: TypeAlias = Union[Literal["cpu", "gpu"], "GPUEngine"]
 
 ScanSource: TypeAlias = Union[
-    str
-    | Path
-    | IO[bytes]
-    | bytes
-    | list[str]
-    | list[Path]
-    | list[IO[bytes]]
-    | list[bytes]
+    str, Path, IO[bytes], bytes, list[str], list[Path], list[IO[bytes]], list[bytes]
 ]