--- a/doc/doap.xml	Sun Sep 12 11:38:47 2021 +0100
+++ b/doc/doap.xml	Sun Sep 12 13:37:27 2021 +0200
@@ -496,6 +496,7 @@
     <implements>
       <xmpp:SupportedXep>
         <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0227.html"/>
+        <xmpp:version>1.1</xmpp:version>
         <xmpp:since>0.7.0</xmpp:since>
         <xmpp:note>Used in migrator tools</xmpp:note>
       </xmpp:SupportedXep>