diff --git a/Doc/library/enum.rst b/Doc/library/enum.rst
index c2030faf8bb..2d206107b43 100644
--- a/Doc/library/enum.rst
+++ b/Doc/library/enum.rst
@@ -9,6 +9,8 @@
 .. :sectionauthor:: Eli Bendersky <eliben@gmail.com>,
 .. :sectionauthor:: Ethan Furman <ethan@stoneleaf.us>
 
+.. versionadded:: 3.4
+
 **Source code:** :source:`Lib/enum.py`
 
 ----------------