Mark deprecated modules as such.
diff --git a/Doc/library/xmllib.rst b/Doc/library/xmllib.rst
index 04ca27e..d14754c 100644
--- a/Doc/library/xmllib.rst
+++ b/Doc/library/xmllib.rst
@@ -4,6 +4,7 @@
 
 .. module:: xmllib
    :synopsis: A parser for XML documents.
+   :deprecated:
 .. moduleauthor:: Sjoerd Mullender <Sjoerd.Mullender@cwi.nl>
 .. sectionauthor:: Sjoerd Mullender <Sjoerd.Mullender@cwi.nl>