diff --git a/setup/db/db/schema-410to420.sql b/setup/db/db/schema-410to420.sql
index 4086f2f6326..921d5faffce 100644
--- a/setup/db/db/schema-410to420.sql
+++ b/setup/db/db/schema-410to420.sql
@@ -22,6 +22,9 @@
 -- Disable foreign key checking
 SET foreign_key_checks = 0;
 
+-- All new inserts to the hypervisor_capabilities table should be after this
+ALTER TABLE `cloud`.`hypervisor_capabilities` ADD CONSTRAINT `uc_hypervisor` UNIQUE (`hypervisor_type`, `hypervisor_version`);
+
 ALTER TABLE `cloud`.`hypervisor_capabilities` ADD COLUMN `max_hosts_per_cluster` int unsigned DEFAULT NULL COMMENT 'Max. hosts in cluster supported by hypervisor';
 ALTER TABLE `cloud`.`hypervisor_capabilities` ADD COLUMN `storage_motion_supported` int(1) unsigned DEFAULT 0 COMMENT 'Is storage motion supported';
 UPDATE `cloud`.`hypervisor_capabilities` SET `max_hosts_per_cluster`=32 WHERE `hypervisor_type`='VMware';
@@ -2243,4 +2246,4 @@ CREATE VIEW `cloud`.`project_view` AS
 
         
 ALTER TABLE `cloud`.`sync_queue` MODIFY `queue_size` smallint(6) NOT NULL DEFAULT '0' COMMENT 'number of items being processed by the queue';
-ALTER TABLE `cloud`.`sync_queue` MODIFY `queue_size_limit` smallint(6) NOT NULL DEFAULT '1' COMMENT 'max number of items the queue can process concurrently';
\ No newline at end of file
+ALTER TABLE `cloud`.`sync_queue` MODIFY `queue_size_limit` smallint(6) NOT NULL DEFAULT '1' COMMENT 'max number of items the queue can process concurrently';