--- a/plugins/mod_c2s.lua	Mon May 01 22:24:13 2023 +0200
+++ b/plugins/mod_c2s.lua	Wed May 03 18:02:11 2023 +0200
@@ -133,7 +133,7 @@
 		if stanza_size_limit then
 			features:reset();
 			features:tag("limits", { xmlns = "urn:xmpp:stream-limits:0" })
-				:text_tag("max-size", string.format("%d", stanza_size_limit)):up();
+				:text_tag("max-bytes", string.format("%d", stanza_size_limit)):up();
 		end
 		send(features);
 	else

--- a/plugins/mod_s2s.lua	Mon May 01 22:24:13 2023 +0200
+++ b/plugins/mod_s2s.lua	Wed May 03 18:02:11 2023 +0200
@@ -250,14 +250,14 @@
 	module:hook("s2sout-stream-features", function (event)
 		if stanza_size_limit then
 			event.features:tag("limits", { xmlns = "urn:xmpp:stream-limits:0" })
-				:text_tag("max-size", string.format("%d", stanza_size_limit)):up();
+				:text_tag("max-bytes", string.format("%d", stanza_size_limit)):up();
 		end
 	end);
 	module:hook_tag("urn:xmpp:bidi", "bidi", function(session, stanza)
 		-- Advertising features on bidi connections where no <stream:features> is sent in the other direction
 		local limits = stanza:get_child("limits", "urn:xmpp:stream-limits:0");
 		if limits then
-			session.outgoing_stanza_size_limit = tonumber(limits:get_child_text("max-size"));
+			session.outgoing_stanza_size_limit = tonumber(limits:get_child_text("max-bytes"));
 		end
 	end, 100);
 	module:hook("s2s-authenticated", make_authenticated, -1);
@@ -265,7 +265,7 @@
 	module:hook_stanza("http://etherx.jabber.org/streams", "features", function (session, stanza) -- luacheck: ignore 212/stanza
 		local limits = stanza:get_child("limits", "urn:xmpp:stream-limits:0");
 		if limits then
-			session.outgoing_stanza_size_limit = tonumber(limits:get_child_text("max-size"));
+			session.outgoing_stanza_size_limit = tonumber(limits:get_child_text("max-bytes"));
 		end
 		if session.type == "s2sout" then
 			-- Stream is authenticated and we are seem to be done with feature negotiation,
@@ -538,7 +538,7 @@
 				if stanza_size_limit then
 					features:reset();
 					features:tag("limits", { xmlns = "urn:xmpp:stream-limits:0" })
-						:text_tag("max-size", string.format("%d", stanza_size_limit)):up();
+						:text_tag("max-bytes", string.format("%d", stanza_size_limit)):up();
 				end
 
 				log("debug", "Sending stream features: %s", features);