diff --git a/db/update20.0.sql b/db/update20.0.sql
index 6c3efaffe5..b15f35efaa 100644
--- a/db/update20.0.sql
+++ b/db/update20.0.sql
@@ -1,3 +1,5 @@
+DELETE FROM `zt_block` WHERE `type` IN ('news', 'patch', 'plugin', 'puglicclass');
+
 ALTER TABLE `zt_block` ADD `dashboard` varchar(20) NOT NULL DEFAULT '' AFTER `account`;
 ALTER TABLE `zt_block` ADD `createdDate` date NULL AFTER `height`;
 ALTER TABLE `zt_block` CHANGE `block` `code` varchar(30) NOT NULL DEFAULT '' AFTER `module`;