diff --git a/db/update21.6.sql b/db/update21.6.sql
new file mode 100644
index 0000000000..ce5506e56a
--- /dev/null
+++ b/db/update21.6.sql
@@ -0,0 +1,3 @@
+ALTER TABLE `zt_relationoftasks` ADD COLUMN `project` mediumint(8) unsigned NOT NULL DEFAULT 0 AFTER `id`;
+ALTER TABLE `zt_relationoftasks` MODIFY `execution` char(30) NOT NULL DEFAULT '' AFTER `project`;
+UPDATE `zt_relationoftasks` SET `project` = (SELECT `project` FROM `zt_task` WHERE `id` = `zt_relationoftasks`.`task`);