axios set headers in config vue js

Right now I use axios like this:

import axios from 'axios'
axios.get(apiObjUrl,
  {
     headers: {
               'Content-type': 'application/x-www-form-urlencoded',
              }
  })
   .then(({data}) => {

How do I set global axios header? (I need to set localization header to use in all my requests)