DeprecationWarning: OutgoingMessage.prototype._headers is deprecated

[x4080]

Hi, I got this message when trying to use it ex :

var Xray = require('x-ray')
var x = Xray()
x('http://google.com', 'title')
    .then(function (res) {
        console.log(res)
    })
    .catch(function (err) {
        console.log(err) // handle error in promise
    })

output is

(node:9660) [DEP0066] DeprecationWarning: OutgoingMessage.prototype._headers is deprecated
(Use `node --trace-deprecation ...` to show where the warning was created)
Google

Any tips how to fix it ?

Thanks