ADUM6000 output voltage tolerance

Most DC:DC converters will tolerate a slightly higher voltage being applied to the output.  I have inherited a design using several ADUM6000 parts providing 5V power to isolated circuitry that really needs at least 6V.  It would be easy to wire in a 6V supply to the output to check if the circuitry works better, my question is whether the ADUM6000 would tolerate this, or be damaged.