diff --git a/install/sql/incremental/upd_dev_collection.sql b/install/sql/incremental/upd_dev_collection.sql
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..68cb3ba7d8e1153abd8a993b6aba39a2e65f58b3 100644
--- a/install/sql/incremental/upd_dev_collection.sql
+++ b/install/sql/incremental/upd_dev_collection.sql
@@ -0,0 +1,3 @@
+ALTER TABLE `mail_user`
+	CHANGE `uid` `uid` int(11) NOT NULL DEFAULT '5000',
+	CHANGE `gid` `gid` int(11) NOT NULL DEFAULT '5000';