diff --git a/db/zm_update-1.31.15.sql b/db/zm_update-1.31.15.sql
new file mode 100644
index 000000000..4c017aa52
--- /dev/null
+++ b/db/zm_update-1.31.15.sql
@@ -0,0 +1,14 @@
+
+SET @s = (SELECT IF(
+    (SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS WHERE table_schema = DATABASE()
+     AND table_name = 'Monitors'
+     AND column_name = 'ZoneCount'
+    ) > 0,
+"SELECT 'Column ZoneCount already exists in Monitors'",
+"ALTER TABLE `Monitors` ADD `ZoneCount` TINYINT NOT NULL DEFAULT 0 AFTER `ArchivedEventDiskSpace`"
+));
+
+PREPARE stmt FROM @s;
+EXECUTE stmt;
+
+UPDATE Monitors SET ZoneCount=(SELECT COUNT(Id) FROM Zones WHERE MonitorId=Monitors.Id);