diff --git a/stdlib/3/fileinput.pyi b/stdlib/3/fileinput.pyi
index 68ec815b7..5fafaddeb 100644
--- a/stdlib/3/fileinput.pyi
+++ b/stdlib/3/fileinput.pyi
@@ -1,4 +1,4 @@
-from typing import Iterable, BinaryIO, List, Callable, IO
+from typing import Iterable, BinaryIO, List, Callable, IO, AnyStr
 
 
 def input(