Erro ao executar a instalação do pod

Question

Estou recebendo este erro ao executar a instalação do pod na minha máquina:

    pod install
/Users/joao/.rvm/gems/ruby-2.2.4/gems/bundler-1.13.1/lib/bundler/rubygems_ext.rb:45:in 'full_gem_path': uninitialized constant Bundler::Plugin::API::Source (NameError)
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/basic_specification.rb:144:in 'block in full_require_paths'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/basic_specification.rb:143:in 'map'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/basic_specification.rb:143:in 'full_require_paths'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/basic_specification.rb:76:in 'contains_requirable_file?'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:949:in 'block in find_in_unresolved'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:949:in 'each'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:949:in 'find_all'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:949:in 'find_in_unresolved'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:74:in 'require'
    from /Users/joao/.rvm/gems/ruby-2.2.4/gems/bundler-1.13.1/lib/bundler/plugin/api/source.rb:2:in '<top (required)>'
    from /Users/joao/.rvm/gems/ruby-2.2.4/gems/bundler-1.13.1/lib/bundler/rubygems_ext.rb:45:in 'full_gem_path'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/basic_specification.rb:144:in 'block in full_require_paths'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/basic_specification.rb:143:in 'map'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/basic_specification.rb:143:in 'full_require_paths'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:1370:in 'add_self_to_load_path'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:1283:in 'activate'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:1314:in 'block in activate_dependencies'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:1300:in 'each'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:1300:in 'activate_dependencies'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:1282:in 'activate'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:1314:in 'block in activate_dependencies'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:1300:in 'each'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:1300:in 'activate_dependencies'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:1282:in 'activate'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_gem.rb:67:in 'block in gem'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_gem.rb:66:in 'synchronize'
    from /Users/joao/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_gem.rb:66:in 'gem'
    from /Users/joao/.rvm/gems/ruby-2.2.4/bin/pod:22:in '<main>'
    from /Users/joao/.rvm/gems/ruby-2.2.4/bin/ruby_executable_hooks:15:in 'eval'
    from /Users/joao/.rvm/gems/ruby-2.2.4/bin/ruby_executable_hooks:15:in '<main>'

Alguma idéia de como corrigir isso?