diff --git a/README.md b/README.md
index e6bf38209c8e8cfd2859682b316ca39e1ef6f8e7..9c4e18e748162e44683d4cc803d400a6855a0c82 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ CREATE TABLE `magic_api_backup` (
   `tag` varchar(32) DEFAULT NULL COMMENT '标签',
   `type` varchar(32) DEFAULT NULL COMMENT '类型',
   `name` varchar(64) DEFAULT NULL COMMENT '原名称',
-  `content` mediumtext COMMENT '备份内容',
+  `content` blob COMMENT '备份内容',
   `create_by` varchar(64) DEFAULT NULL COMMENT '操作人',
   PRIMARY KEY (`id`,`create_date`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4