diff --git a/broker/migrate/h2/V41__alter_user_setting_key_column.sql b/broker/migrate/h2/V41__alter_user_setting_key_column.sql
new file mode 100755
index 00000000..e0754104
--- /dev/null
+++ b/broker/migrate/h2/V41__alter_user_setting_key_column.sql
@@ -0,0 +1 @@
+alter table `t_user_setting` modify column `_key` varchar(128) NOT NULL;
diff --git a/broker/migrate/mysql/V47__fix_read_report_error.sql b/broker/migrate/mysql/V47__fix_read_report_error.sql
new file mode 100755
index 00000000..f7457d48
--- /dev/null
+++ b/broker/migrate/mysql/V47__fix_read_report_error.sql
@@ -0,0 +1,3 @@
+
+ALTER TABLE `t_read_report` MODIFY COLUMN `_uid` VARCHAR(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL;
+ALTER TABLE `t_read_report` MODIFY COLUMN `_target` VARCHAR(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL;
diff --git a/broker/migrate/mysql/V48__alter_user_setting_key_column.sql b/broker/migrate/mysql/V48__alter_user_setting_key_column.sql
new file mode 100755
index 00000000..376d6a2d
--- /dev/null
+++ b/broker/migrate/mysql/V48__alter_user_setting_key_column.sql
@@ -0,0 +1 @@
+alter table `t_user_setting` modify column `_key` varchar(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin NOT NULL;