diff --git a/src/mod_mam.erl b/src/mod_mam.erl
index 1de1d9a95..edbc4f91a 100644
--- a/src/mod_mam.erl
+++ b/src/mod_mam.erl
@@ -26,6 +26,8 @@
 %%%-------------------------------------------------------------------
 -module(mod_mam).
 
+-protocol({xep, 313, '0.3'}).
+
 -behaviour(gen_mod).
 
 %% API