diff --git a/pandas/io/formats/csvs.py b/pandas/io/formats/csvs.py
index e9af2f6676092..f078975e4b85a 100644
--- a/pandas/io/formats/csvs.py
+++ b/pandas/io/formats/csvs.py
@@ -9,7 +9,6 @@
 from typing import (
     TYPE_CHECKING,
     Any,
-    AnyStr,
     Hashable,
     Iterator,
     Sequence,
@@ -49,7 +48,7 @@ class CSVFormatter:
     def __init__(
         self,
         formatter: DataFrameFormatter,
-        path_or_buf: FilePathOrBuffer[AnyStr] = "",
+        path_or_buf: FilePathOrBuffer[str] | FilePathOrBuffer[bytes] = "",
         sep: str = ",",
         cols: Sequence[Hashable] | None = None,
         index_label: IndexLabel | None = None,