Whenever I run bundle update or bundle install on Windows 8.1 I can\'t update/install gems from github. I can install other gems like uglifier, but it doesn\'t work for gith
Are you running a pre-release version of Bundler? This commit might be related to your problem; it looks like earlier versions of Bundler scan your %PATH% for "git", but not "git.exe".
The easiest solution would be to backport bundler to 1.3.5: