diff --git a/m-tuple.h b/m-tuple.h
index 26a5851b..0d7be053 100644
--- a/m-tuple.h
+++ b/m-tuple.h
@@ -513,6 +513,8 @@ namespace m_tuple {
    M_IF_METHOD_ALL(PARSE_STR, __VA_ARGS__)(PARSE_STR(M_C(name, _parse_str)),), \
    M_IF_METHOD_ALL(IN_STR, __VA_ARGS__)(IN_STR(M_C(name, _in_str)),),   \
    M_IF_METHOD_ALL(OUT_STR, __VA_ARGS__)(OUT_STR(M_C(name, _out_str)),), \
+   M_IF_METHOD_ALL(IN_SERIAL, __VA_ARGS__)(IN_SERIAL(M_C(name, _in_serial)),),   \
+   M_IF_METHOD_ALL(OUT_SERIAL, __VA_ARGS__)(OUT_SERIAL(M_C(name, _out_serial)),), \
    M_IF_METHOD_ALL(INIT_MOVE, __VA_ARGS__)(INIT_MOVE(M_C(name, _init_move)),), \
    M_IF_METHOD_ALL(MOVE, __VA_ARGS__)(MOVE(M_C(name, _move)),),         \
    M_IF_METHOD_ALL(SWAP, __VA_ARGS__)(SWAP(M_C(name, _swap)),),         \