I originally installed my local github pages through the wizard/web interface that Github pages offered.
I'm now stuck with older versions of Jekyll and dependencies in my Gemfile.lock:
https://github.com/bram-atmire/bram-atmire.github.io/blob/master/Gemfile.lock
The ruby gem github-pages gives me a clue as what the most recent versions are: https://rubygems.org/gems/github-pages
But what's the recommended way to perform these upgrades? Can I just manually update the version number for any dependency? Or is there a trick to just get the last, standardized Gemfile?