diff --git a/lib/vero.rb b/lib/vero.rb
index aa7f4ed..d04054d 100644
--- a/lib/vero.rb
+++ b/lib/vero.rb
@@ -1,3 +1,4 @@
+require 'json'
 require 'rest-client'
 require 'vero/utility/ext'
 
diff --git a/lib/vero/api/base_api.rb b/lib/vero/api/base_api.rb
index 1604b5b..bb8816c 100644
--- a/lib/vero/api/base_api.rb
+++ b/lib/vero/api/base_api.rb
@@ -1,6 +1,3 @@
-require 'json'
-require 'rest-client'
-
 module Vero
   module Api
     module Workers
@@ -65,4 +62,4 @@ def options_with_symbolized_keys(val)
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/lib/vero/config.rb b/lib/vero/config.rb
index c21b426..660a790 100644
--- a/lib/vero/config.rb
+++ b/lib/vero/config.rb
@@ -3,10 +3,12 @@
 module Vero
   class Config
     attr_writer :domain
-    attr_accessor :api_key, :secret, :development_mode, :async, :disabled, :logging
+    attr_accessor :api_key, :secret, :development_mode, :async, :disabled
+    attr_accessor :logging, :sender_class
 
     def self.available_attributes
-      [:api_key, :secret, :development_mode, :async, :disabled, :logging, :domain]
+      [:api_key, :secret, :development_mode, :async, :disabled, :logging,
+        :domain, :sender_class]
     end
 
     def initialize
diff --git a/lib/vero/sender.rb b/lib/vero/sender.rb
index 7daebd0..82a48fc 100644
--- a/lib/vero/sender.rb
+++ b/lib/vero/sender.rb
@@ -1,5 +1,3 @@
-require 'json'
-
 module Vero
   class SenderHash < ::Hash
     def [](key)
@@ -39,7 +37,7 @@ def self.send(api_class, sender_strategy, domain, options)
       else
         self.senders[false]
       end
-      
+
       (sender_class.new).call(api_class, domain, options)
     rescue => e
       options_s = JSON.dump(options)
diff --git a/lib/vero/senders/base.rb b/lib/vero/senders/base.rb
index 8ab731e..f998333 100644
--- a/lib/vero/senders/base.rb
+++ b/lib/vero/senders/base.rb
@@ -1,14 +1,11 @@
-require 'json'
-
 module Vero
   module Senders
     class Base
       def call(api_class, domain, options)
         response = api_class.perform(domain, options)
-        options_s = JSON.dump(options)
-        Vero::App.log(self, "method: #{api_class.name}, options: #{options_s}, response: job performed")
+        Vero::App.log(self, "method: #{api_class.name}, options: #{JSON.dump(options)}, response: job performed")
         response
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/lib/vero/senders/delayed_job.rb b/lib/vero/senders/delayed_job.rb
index c75fe5c..0a06761 100644
--- a/lib/vero/senders/delayed_job.rb
+++ b/lib/vero/senders/delayed_job.rb
@@ -1,4 +1,3 @@
-require 'json'
 require 'delayed_job'
 
 module Vero
@@ -6,8 +5,7 @@ module Senders
     class DelayedJob
       def call(api_class, domain, options)
         response = ::Delayed::Job.enqueue api_class.new(domain, options)
-        options_s = JSON.dump(options)
-        Vero::App.log(self, "method: #{api_class.name}, options: #{options_s}, response: delayed job queued")
+        Vero::App.log(self, "method: #{api_class.name}, options: #{JSON.dump(options)}, response: delayed job queued")
         response
       rescue => e
         if e.message == "Could not find table 'delayed_jobs'"
@@ -18,4 +16,4 @@ def call(api_class, domain, options)
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/lib/vero/senders/resque.rb b/lib/vero/senders/resque.rb
index ead61f8..a0b4836 100644
--- a/lib/vero/senders/resque.rb
+++ b/lib/vero/senders/resque.rb
@@ -1,19 +1,16 @@
-require 'json'
 require 'resque'
 
 module Vero
   class ResqueWorker
     @queue = :vero
 
-    def self.perform(api_class_name, domain, options)
-      api_class = eval(api_class_name)
+    def self.perform(api_class, domain, options)
+      api_class = eval(api_class.to_s)
       new_options = {}
-      options.each do |k,v|
-        new_options[k.to_sym] = v
-      end
+      options.each { |k,v| new_options[k.to_sym] = v }
 
       api_class.new(domain, new_options).perform
-      Vero::App.log(self, "method: #{api_class.name}, options: #{options.to_json}, response: resque job queued")
+      Vero::App.log(self, "method: #{api_class.name}, options: #{JSON.dump(options)}, response: resque job queued")
     end
   end
 
@@ -24,4 +21,4 @@ def call(api_class, domain, options)
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/lib/vero/senders/sidekiq.rb b/lib/vero/senders/sidekiq.rb
index 919e4af..74e9dc8 100644
--- a/lib/vero/senders/sidekiq.rb
+++ b/lib/vero/senders/sidekiq.rb
@@ -1,4 +1,3 @@
-require 'json'
 require 'sidekiq'
 
 module Vero
@@ -6,18 +5,38 @@ class SidekiqWorker
     include ::Sidekiq::Worker
 
     def perform(api_class, domain, options)
-      api_class.constantize.new(domain, options).perform
-      Vero::App.log(self, "method: #{api_class}, options: #{options.to_json}, response: sidekiq job queued")
+      send_to_vero(api_class, domain, options)
+    end
+
+    protected
+
+    def send_to_vero(api_class, domain, options)
+      api_klass(api_class).new(domain, options).perform
+      Vero::App.log(self, "method: #{api_class}, options: #{JSON.dump(options)}, response: sidekiq job performed")
+    end
+
+    def api_klass(api_class)
+      eval(api_class.to_s)
     end
   end
 
   module Senders
     class Sidekiq
       def call(api_class, domain, options)
-        response = ::Vero::SidekiqWorker.perform_async(api_class.to_s, domain, options)
-        Vero::App.log(self, "method: #{api_class.name}, options: #{options.to_json}, response: sidekiq job queued")
+        response = sender_class.perform_async(api_class.to_s, domain, options)
+        Vero::App.log(self, "method: #{api_class.name}, options: #{JSON.dump(options)}, response: sidekiq job queued")
         response
       end
+
+      def sender_class
+        klass = Vero::App.default_context.config.sender_class
+
+        if klass && klass.new.is_a?(::Sidekiq::Worker)
+          klass
+        else
+          Vero::SidekiqWorker
+        end
+      end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/lib/vero/senders/thread.rb b/lib/vero/senders/thread.rb
index f7e0960..980d6de 100644
--- a/lib/vero/senders/thread.rb
+++ b/lib/vero/senders/thread.rb
@@ -1,4 +1,3 @@
-require 'json'
 require 'sucker_punch'
 
 module Vero
@@ -11,9 +10,9 @@ def perform(api_class, domain, options)
 
       begin
         api_class.new(domain, new_options).perform
-        Vero::App.log(self, "method: #{api_class.name}, options: #{options.to_json}, response: job performed")
+        Vero::App.log(self, "method: #{api_class.name}, options: #{JSON.dump(options)}, response: job performed")
       rescue => e
-        Vero::App.log(self, "method: #{api_class.name}, options: #{options.to_json}, response: #{e.message}")
+        Vero::App.log(self, "method: #{api_class.name}, options: #{JSON.dump(options)}, response: #{e.message}")
       end
     end
   end
diff --git a/spec/lib/senders/sidekiq_spec.rb b/spec/lib/senders/sidekiq_spec.rb
index 1f66f55..c98dcfd 100644
--- a/spec/lib/senders/sidekiq_spec.rb
+++ b/spec/lib/senders/sidekiq_spec.rb
@@ -1,10 +1,36 @@
 require 'spec_helper'
 
+class SomeOtherSidekiqWorker < Vero::SidekiqWorker
+end
+
 describe Vero::Senders::Sidekiq do
   subject { Vero::Senders::Sidekiq.new }
   describe :call do
     it "should perform_async a Vero::SidekiqWorker" do
-      Vero::SidekiqWorker.should_receive(:perform_async).with('Vero::Api::Workers::Events::TrackAPI', "abc", {:test => "abc"}).once
+      Vero::SidekiqWorker.should_receive(:perform_async)
+        .with('Vero::Api::Workers::Events::TrackAPI', "abc", {:test => "abc"})
+        .once
+
+      subject.call(Vero::Api::Workers::Events::TrackAPI, "abc", {:test => "abc"})
+    end
+
+    it "should default to Vero::SidekiqWorker when the sender_class is invalid" do
+      Vero::App.default_context.config.sender_class = String
+
+      Vero::SidekiqWorker.should_receive(:perform_async)
+        .with('Vero::Api::Workers::Events::TrackAPI', "abc", {:test => "abc"})
+        .once
+
+      subject.call(Vero::Api::Workers::Events::TrackAPI, "abc", {:test => "abc"})
+    end
+
+    it "should allow you to define a different Sidekiq sender class" do
+      Vero::App.default_context.config.sender_class = SomeOtherSidekiqWorker
+
+      SomeOtherSidekiqWorker.should_receive(:perform_async)
+        .with('Vero::Api::Workers::Events::TrackAPI', "abc", {:test => "abc"})
+        .once
+
       subject.call(Vero::Api::Workers::Events::TrackAPI, "abc", {:test => "abc"})
     end
   end
@@ -22,4 +48,4 @@
       subject.perform('Vero::Api::Workers::Events::TrackAPI', "abc", {:test => "abc"})
     end
   end
-end
\ No newline at end of file
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index db70a62..881e897 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,8 +1,8 @@
 require 'rubygems'
 require 'bundler/setup'
 require 'vero'
-require 'json'
 require 'sucker_punch/testing/inline'
+# require 'byebug'
 
 Dir[::File.expand_path('../support/**/*.rb',  __FILE__)].each { |f| require f }
 
diff --git a/vero.gemspec b/vero.gemspec
index 2e57ae5..088faf3 100644
--- a/vero.gemspec
+++ b/vero.gemspec
@@ -13,6 +13,7 @@ Gem::Specification.new do |s|
   s.authors  = ['James Lamont']
 
   dependencies = [
+    [:development, 'byebug'],
     [:development, 'rails', "~> 3.0"],
     [:development, 'rspec'],
     [:development, 'delayed_job', "~> 3.0.0"],