diff --git a/sql/mysql/upgrade/2.99.8/25-authentication_details.sql b/sql/mysql/upgrade/2.99.8/25-authentication_details.sql
new file mode 100644
index 0000000..a78789d
--- /dev/null
+++ b/sql/mysql/upgrade/2.99.8/25-authentication_details.sql
@@ -0,0 +1,7 @@
+ALTER TABLE `users` CHANGE `ldap_dn` `authentication_details_s1` VARCHAR( 255 ) NULL DEFAULT NULL ;
+ALTER TABLE `users` CHANGE `authentication_details` `authentication_details_s2` VARCHAR( 255 ) NULL DEFAULT NULL ;
+ALTER TABLE `groups_lookup` ADD COLUMN `authentication_details_s2` varchar(255) default NULL;
+ALTER TABLE `groups_lookup` ADD COLUMN `authentication_details_s1` varchar(255) default NULL;
+ALTER TABLE `groups_lookup` ADD INDEX `authentication_details_s1` (`authentication_details_s1`);
+ALTER TABLE `groups_lookup` ADD `authentication_source_id` INT NULL ;
+ALTER TABLE `groups_lookup` ADD INDEX ( `authentication_source_id` ) ;