diff --git a/broker/migrate/h2/V24__add_friend_extra.sql b/broker/migrate/h2/V24__add_friend_extra.sql
new file mode 100755
index 00000000..c036e8d6
--- /dev/null
+++ b/broker/migrate/h2/V24__add_friend_extra.sql
@@ -0,0 +1 @@
+alter table t_friend add column `_extra` TEXT DEFAULT NULL;
diff --git a/broker/migrate/mysql/V29__add_friend_extra.sql b/broker/migrate/mysql/V29__add_friend_extra.sql
new file mode 100755
index 00000000..c036e8d6
--- /dev/null
+++ b/broker/migrate/mysql/V29__add_friend_extra.sql
@@ -0,0 +1 @@
+alter table t_friend add column `_extra` TEXT DEFAULT NULL;