diff --git a/setup/db/db/schema-410to420.sql b/setup/db/db/schema-410to420.sql
index c8ec7268e79..47fd4bd3c42 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';