diff --git a/plugins/commands/serve/util/client_setup.rb b/plugins/commands/serve/util/client_setup.rb
index c9e23d1c4..5439ebc88 100644
--- a/plugins/commands/serve/util/client_setup.rb
+++ b/plugins/commands/serve/util/client_setup.rb
@@ -3,6 +3,7 @@ module VagrantPlugins
     module Util
       module ClientSetup
         def self.prepended(klass)
+          klass.extend(Connector)
           klass.class_eval do
             attr_reader :broker, :client, :proto
           end