当我使用bundle时，无法访问rubygems存储库http://rubygems.org/

Question

aoople@aoople:~/projects/jobs$ bundle
Fetching source index for http://rubygems.org/
Could not reach rubygems repository http://rubygems.org/
Could not find hoptoad_notifier-2.4.11 in any of the sources

有人帮助我了！