--- a/bash-completion.sh	Sat Jun 06 01:50:43 2020 +0200
+++ b/bash-completion.sh	Wed Sep 23 09:58:07 2020 +0200
@@ -56,6 +56,7 @@
 		"http://www.w3.org/1999/xhtml"
 		"http://www.w3.org/2000/svg"
 		"http://www.w3.org/2005/Atom"
+		"http://docbook.org/ns/docbook"
 	)