diff --git a/db/db.code.version.txt b/db/db.code.version.txt
index bb2ee19..ad03f7c 100644
--- a/db/db.code.version.txt
+++ b/db/db.code.version.txt
@@ -1 +1 @@
-203
+204
diff --git a/db/db.update.204.php b/db/db.update.204.php
new file mode 100755
index 0000000..16e0ed9
--- /dev/null
+++ b/db/db.update.204.php
@@ -0,0 +1,46 @@
+<?php
+function db_update_204_pre() 
+{
+}
+
+function db_update_204_post()
+{
+	$tables = array(
+		'judges_schedulerconfig',
+		'judges_teams',
+		'judges_teams_awards_link',
+		'judges_teams_link',
+		'judges_teams_timeslots_link',
+		'judges_teams_timeslots_projects_link',
+		'judges_timeslots'
+	);
+
+	// get the year => conference_id links
+	$q1 = mysql_query("SELECT year, id FROM conferences");
+	while($r = mysql_fetch_assoc($q1)){
+
+		foreach($tables as $tableName){
+			$query = "UPDATE `$tableName` SET `conferences_id` = {$r['id']} WHERE `year` = {$r['year']}";
+			mysql_query($query);
+			echo $query . ";\n";
+		}
+	}
+
+	// a couple more
+	foreach($tables as $tableName){
+		$query = "UPDATE `$tableName` SET `conferences_id` = -1 WHERE `year` = -1";
+		mysql_query($query);
+		echo $query . ";\n";
+
+		$query = mysql_query("SELECT DISTINCT(year) FROM `$tableName` WHERE `conferences_id` = 0");
+		$badYears = array();
+		while($data = mysql_fetch_assoc($query)){
+			$badYears[] = $data['year'];
+		}
+		if(count($badYears) > 0){
+			echo "ERROR: could not update conference_id in the table '$tableName' for the years ";
+			echo implode(', ', $badYears) . "\n";
+		}
+	}
+}
+?>
diff --git a/db/db.update.204.sql b/db/db.update.204.sql
new file mode 100644
index 0000000..815a979
--- /dev/null
+++ b/db/db.update.204.sql
@@ -0,0 +1,7 @@
+ALTER TABLE `judges_schedulerconfig` ADD `conferences_id` INT NOT NULL;
+ALTER TABLE `judges_teams` ADD `conferences_id` INT NOT NULL;
+ALTER TABLE `judges_teams_awards_link` ADD `conferences_id` INT NOT NULL;
+ALTER TABLE `judges_teams_link` ADD `conferences_id` INT NOT NULL;
+ALTER TABLE `judges_teams_timeslots_link` ADD `conferences_id` INT NOT NULL;
+ALTER TABLE `judges_teams_timeslots_projects_link` ADD `conferences_id` INT NOT NULL;
+ALTER TABLE `judges_timeslots` ADD `conferences_id` INT NOT NULL;