update docs for #23111
diff --git a/Doc/library/ftplib.rst b/Doc/library/ftplib.rst
index ede1b6c..3b9f50c 100644
--- a/Doc/library/ftplib.rst
+++ b/Doc/library/ftplib.rst
@@ -414,7 +414,7 @@
 
 .. attribute:: FTP_TLS.ssl_version
 
-   The SSL version to use (defaults to *TLSv1*).
+   The SSL version to use (defaults to :attr:`ssl.PROTOCOL_SSLv23`).
 
 .. method:: FTP_TLS.auth()