diff --git a/src/mod_mam.erl b/src/mod_mam.erl
index 7781cff9a..c23e695d9 100644
--- a/src/mod_mam.erl
+++ b/src/mod_mam.erl
@@ -25,7 +25,7 @@
 %%%-------------------------------------------------------------------
 -module(mod_mam).
 
--protocol({xep, 313, '0.3'}).
+-protocol({xep, 313, '0.4'}).
 
 -behaviour(gen_mod).