Zephire

I'm trying to connect to an externally hosted Tekkit server, but I am getting an error about not having the required Forge version. It says "Must have Forge build #136+ (4069 fix) to connect to this server." I am using the downloaded Tekkit server .jar from the TechnicPack website, along with the Technic Launcher provided. I have no idea how to update the Forge, nor how to solve this problem. Any and all help is appreciated, thank you!