diff --git a/README.md b/README.md
index 5832a4b3f..92d8d89b5 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,11 @@ Certd 是一个免费全自动申请和自动部署更新SSL证书的管理系
 > 流水线数量现已调整为无限制，欢迎大家使用
 >
 
+> 关于证书续期：
+ >* 实际上没有办法不改变证书文件本身情况下直接续期或者续签。
+ >* 我们所说的续期，其实就是按照全套流程重新申请一份新证书，然后重新部署上去。
+
+ 
 ## 二、在线体验
 
 官方Demo地址，自助注册后体验    
diff --git a/packages/ui/certd-server/db/migration-mysql/v10019__text_too_short.sql b/packages/ui/certd-server/db/migration-mysql/v10019__text_too_short.sql
new file mode 100644
index 000000000..c06d4fb9e
--- /dev/null
+++ b/packages/ui/certd-server/db/migration-mysql/v10019__text_too_short.sql
@@ -0,0 +1,4 @@
+
+ALTER TABLE `pi_history` MODIFY COLUMN `pipeline` longtext  NULL;
+ALTER TABLE `pi_storage` MODIFY COLUMN `value` longtext  NULL;
+ALTER TABLE `pi_history_log` MODIFY COLUMN `logs` longtext  NULL;
diff --git a/packages/ui/certd-server/db/migration-pg/v10019__text_too_short.sql b/packages/ui/certd-server/db/migration-pg/v10019__text_too_short.sql
new file mode 100644
index 000000000..e69de29bb
diff --git a/packages/ui/certd-server/db/migration/v10019__text_too_short.sql b/packages/ui/certd-server/db/migration/v10019__text_too_short.sql
new file mode 100644
index 000000000..e69de29bb