Update versionadded/changed.
diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst
index 92ac6c4..53d86a0 100644
--- a/Doc/library/argparse.rst
+++ b/Doc/library/argparse.rst
@@ -4,7 +4,7 @@
 .. module:: argparse
    :synopsis: Command-line option and argument parsing library.
 .. moduleauthor:: Steven Bethard <steven.bethard@gmail.com>
-.. versionadded:: 2.7
+.. versionadded:: 3.2
 .. sectionauthor:: Steven Bethard <steven.bethard@gmail.com>