[chef] JSON Dependency issue

["Michael L." < >]

Greetings!

I have installed a brand new chef (11.4.0) with ryby 1.9.3 
Although I see chef depends on json (<= 1.7.7, >= 1.4.4) and I have json 
(1.7.7), 
when I run knife I get this error: 

/Users/mic/.rvm/gems/
 /gems/bundler-1.1.3/lib/bundler/spec_set.rb:90:in
 `block in materialize': Could not find json-1.6.1 in any of the sources 
(Bundler::GemNotFound)

The gist with the details can be found here :

https://gist.github.com/anonymous/5309019

Any ideas ?