diff --git a/CHANGES.rst b/CHANGES.rst
index ab1aafe3..c7ae2f65 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,3 +1,11 @@
+Version 3.0.1
+-------------
+
+Unreleased
+
+-   Correct type for ``path`` argument to ``send_file``. :issue:`5230`
+
+
 Version 3.0.0
 -------------
 
diff --git a/pyproject.toml b/pyproject.toml
index 652de0da..ca0eda79 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "Flask"
-version = "3.0.0"
+version = "3.0.1.dev"
 description = "A simple framework for building complex web applications."
 readme = "README.rst"
 license = {file = "LICENSE.rst"}
diff --git a/src/flask/helpers.py b/src/flask/helpers.py
index 8601c2fd..84608912 100644
--- a/src/flask/helpers.py
+++ b/src/flask/helpers.py
@@ -387,7 +387,7 @@ def _prepare_send_file_kwargs(**kwargs: t.Any) -> dict[str, t.Any]:
 
 
 def send_file(
-    path_or_file: os.PathLike | str | t.BinaryIO,
+    path_or_file: os.PathLike[t.AnyStr] | str | t.BinaryIO,
     mimetype: str | None = None,
     as_attachment: bool = False,
     download_name: str | None = None,