diff --git a/tests/test_files.py b/tests/test_files.py
index d6a022aa1..0f7ca5707 100644
--- a/tests/test_files.py
+++ b/tests/test_files.py
@@ -18,6 +18,7 @@
 
 import collections
 import datetime
+import io
 import os
 from typing import Iterable, Sequence
 import pathlib
@@ -38,7 +39,7 @@ def __init__(self, test):
 
     def create_file(
         self,
-        path: str | pathlib.Path | os.PathLike,
+        path: str | io.IOBase | os.PathLike,
         *,
         mime_type: str | None = None,
         name: str | None = None,