Another ruby ​​version in sudo

I am using OSX 10.10.3

and using rbenv

ruby for use.

when i ran ruby -v

:

ruby 2.2.1p85 (2015-02-26 revision 49769) [x86_64-darwin14]

      

        
        
        
      

    

when i run sudo ruby -v

:

ruby 2.0.0p481 (2014-05-08 revision 45883) [universal.x86_64-darwin14]

      

        
        
        
      

    

versions in rbenv (both sudo and regular run):

  system
* 2.2.1 (set by /Users/shalev/.rbenv/version)

      

        
        
        
      

    

How can I change the ruby ​​version in sudo and why is this happening?