lib/heroku/api/config_vars.rb in heroku-api-0.2.7 vs lib/heroku/api/config_vars.rb in heroku-api-0.2.8

@@ -20,10 +20,10 @@
     end
 
     # PUT /apps/:app/config_vars
     def put_config_vars(app, vars)
       request(
-        :body     => Heroku::API.json_encode(vars),
+        :body     => Heroku::API::OkJson.encode(vars),
         :expects  => 200,
         :method   => :put,
         :path     => "/apps/#{app}/config_vars"
       )
     end