diff --git a/db/db.update.4.sql b/db/db.update.4.sql
new file mode 100644
index 0000000..4f39f8d
--- /dev/null
+++ b/db/db.update.4.sql
@@ -0,0 +1,9 @@
+ALTER TABLE `judges_teams_link` ADD `captain` ENUM( 'no', 'yes' ) NOT NULL AFTER `judges_teams_id` ;
+CREATE TABLE `judges_timeslots` (
+	`id` INT UNSIGNED NOT NULL AUTO_INCREMENT ,
+	`date` DATE NOT NULL ,
+	`starttime` TIME NOT NULL ,
+	`endtime` TIME NOT NULL ,
+	`year` INT NOT NULL ,
+	PRIMARY KEY ( `id` ) 
+);