#4984: fix number of types.
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index 2ea9a38..577d1a5 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -594,7 +594,7 @@
Sequence Types --- :class:`str`, :class:`bytes`, :class:`bytearray`, :class:`list`, :class:`tuple`, :class:`range`
==================================================================================================================
-There are five sequence types: strings, byte sequences, byte arrays, lists,
+There are six sequence types: strings, byte sequences, byte arrays, lists,
tuples, and range objects. (For other containers see the built-in
:class:`dict`, :class:`list`, :class:`set`, and :class:`tuple` classes, and the
:mod:`collections` module.)