Firewall warning on OS X every start up

I get a firewall warning about incoming connections every time i start openPHT. I always have to allow it for openPHT to connect to PMS.

I have tried adding it to allow under security settings, it still prompts me every time. From what I understand there may be a signature issue with openPHT?

Is there a way to fix this without disabling my firewall?

forums.plex.tv/discussion/196323/accept-incoming-network-connections-on-mac-os-x#latest