Using Pheanstalkd on a different port

By default, Beanstalkd uses port 11300. However, it appears something is using that port so I have to use 11305.

Is there any way to define this port for Lumen to use when executing the Pheanstalkd class without editing it through vendor folder?

I would assume a variable in the .env file, something like BEANSTALKD_PORT would work but obviously not.