--- a/plugins/mod_carbons.lua	Tue Oct 05 16:30:41 2021 +0200
+++ b/plugins/mod_carbons.lua	Tue Oct 05 17:02:32 2021 +0200
@@ -10,6 +10,8 @@
 local xmlns_forward = "urn:xmpp:forward:0";
 local full_sessions, bare_sessions = prosody.full_sessions, prosody.bare_sessions;
 
+module:add_feature("urn:xmpp:carbons:rules:0");
+
 local function is_bare(jid)
 	return not jid_resource(jid);
 end