diff --git a/stdlib/sys/__init__.pyi b/stdlib/sys/__init__.pyi
index 11c78b73af5b..847895fb65b1 100644
--- a/stdlib/sys/__init__.pyi
+++ b/stdlib/sys/__init__.pyi
@@ -42,6 +42,7 @@ excepthook: Callable[[type[BaseException], BaseException, TracebackType | None],
 exec_prefix: str
 executable: str
 float_repr_style: Literal["short", "legacy"]
+_framework: str  # empty string on non-macOS platforms
 hexversion: int
 last_type: type[BaseException] | None
 last_value: BaseException | None