diff --git a/store/db/mysql/migration/prod/0.22/01__memo_tags.sql b/store/db/mysql/migration/prod/0.22/01__memo_tags.sql
index ad5a397a..6812f76d 100644
--- a/store/db/mysql/migration/prod/0.22/01__memo_tags.sql
+++ b/store/db/mysql/migration/prod/0.22/01__memo_tags.sql
@@ -1,4 +1,3 @@
 ALTER TABLE `memo` ADD COLUMN `tags_temp` JSON;
 UPDATE `memo` SET `tags_temp` = '[]';
-ALTER TABLE `memo` DROP COLUMN `tags`;
 ALTER TABLE `memo` CHANGE COLUMN `tags_temp` `tags` JSON NOT NULL;
diff --git a/store/db/mysql/migration/prod/0.22/02__memo_payload.sql b/store/db/mysql/migration/prod/0.22/02__memo_payload.sql
index c9cbb142..24e7b84c 100644
--- a/store/db/mysql/migration/prod/0.22/02__memo_payload.sql
+++ b/store/db/mysql/migration/prod/0.22/02__memo_payload.sql
@@ -1,4 +1,3 @@
 ALTER TABLE `memo` ADD COLUMN `payload_temp` JSON;
 UPDATE `memo` SET `payload_temp` = '{}';
-ALTER TABLE `memo` DROP COLUMN `payload`;
 ALTER TABLE `memo` CHANGE COLUMN `payload_temp` `payload` JSON NOT NULL;