diff --git a/README.md b/README.md
index b9a1b62b5fcaa47c0be31187d7bbbaf95b364b27..69ea68c3d66305e572b09d5fa98bfb81331c0b65 100644
--- a/README.md
+++ b/README.md
@@ -335,6 +335,7 @@ CREATE TABLE `ddk_lock`
     `id`       bigint(20) NOT NULL AUTO_INCREMENT,
     `resource` varchar(200) NOT NULL COMMENT '锁定的资源',
     `desc`     varchar(200) NOT NULL DEFAULT '' COMMENT '描述',
+    `create_time`   datetime NOT NULL COMMENT '创建时间',
     `env`      varchar(16)  NOT NULL COMMENT '环境',
     PRIMARY KEY (`id`),
     UNIQUE KEY `uiq_idx_resource` (`resource`)