diff --git a/update.sql b/update.sql
index 512bf8c6..960cfd09 100644
--- a/update.sql
+++ b/update.sql
@@ -66,3 +66,4 @@ INSERT IGNORE INTO `lsky_group` (`id`, `strategy`, `name`, `default`, `update_ti
 
 -- v1.5.1
 UPDATE `lsky_config` SET `value` = '1.5.1' WHERE `lsky_config`.`name` = 'system_version';
+ALTER TABLE `lsky_users` CHANGE `reg_ip` `reg_ip` VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '注册IP';