That isn&#x27;t true, according to their own documentation:<p><a href="http:&#x2F;&#x2F;docs.aws.amazon.com&#x2F;AmazonRDS&#x2F;latest&#x2F;UserGuide&#x2F;USER_UpgradeDBInstance.Upgrading.html#USER_UpgradeDBInstance.PostgreSQL" rel="nofollow">http:&#x2F;&#x2F;docs.aws.amazon.com&#x2F;AmazonRDS&#x2F;latest&#x2F;UserGuide&#x2F;USER_U...</a>