diff --git a/stdlib/base64.pyi b/stdlib/base64.pyi
index 01d304dc7..e217d6d3d 100644
--- a/stdlib/base64.pyi
+++ b/stdlib/base64.pyi
@@ -19,6 +19,10 @@ def b32decode(s: _decodable, casefold: bool = ..., map01: Optional[bytes] = ...)
 def b16encode(s: _encodable) -> bytes: ...
 def b16decode(s: _decodable, casefold: bool = ...) -> bytes: ...
 
+if sys.version_info >= (3, 10):
+    def b32hexencode(s: _encodable) -> bytes: ...
+    def b32hexdecode(s: _decodable, casefold: bool = ...) -> bytes: ...
+
 if sys.version_info >= (3, 4):
     def a85encode(b: _encodable, *, foldspaces: bool = ..., wrapcol: int = ..., pad: bool = ..., adobe: bool = ...) -> bytes: ...
     def a85decode(b: _decodable, *, foldspaces: bool = ..., adobe: bool = ..., ignorechars: Union[str, bytes] = ...) -> bytes: ...