修改gem源为淘宝源的问题

~/app/rails/blog$ gem source
*** CURRENT SOURCES ***

http://ruby.taobao.org/

~/app/rails/blog$ bundle install
Fetching gem metadata from https://rubygems.org/............
Fetching version metadata from https://rubygems.org/...
Fetching dependency metadata from https://rubygems.org/..
为什么修改了gem源为淘宝源但是执行bundle install这个命令时还是从https://rubygems.org/获取资源？是没改对么，新手不懂～～

bundle config mirror.https://rubygems.org https://ruby.taobao.org

 bundle config mirror.https://rubygems.org https://ruby.taobao.org