From 45eb69f8bac0e4905c8f511a86b8c6705d33ff74 Mon Sep 17 00:00:00 2001
From: Pouria-yvr <75648294+Pouria-yvr@users.noreply.github.com>
Date: Tue, 5 Aug 2025 17:31:06 -0700
Subject: [PATCH] Update helpers.pyLoosen send_file type annotation to include
 t.IO[bytes]  Include typing.IO[bytes] to align with Werkzeug and resolve
 issue #5776.

---
 src/flask/helpers.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/flask/helpers.py b/src/flask/helpers.py
index 90a0e0c6..44aa81c9 100644
--- a/src/flask/helpers.py
+++ b/src/flask/helpers.py
@@ -398,7 +398,7 @@ def _prepare_send_file_kwargs(**kwargs: t.Any) -> dict[str, t.Any]:
 
 
 def send_file(
-    path_or_file: os.PathLike[t.AnyStr] | str | t.BinaryIO,
+    path_or_file: os.PathLike[t.AnyStr] | str | t.BinaryIO | t.IO[bytes],
     mimetype: str | None = None,
     as_attachment: bool = False,
     download_name: str | None = None,