diff --git a/.travis.yml b/.travis.yml
index c17c97dc..d38f50fd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,12 +7,6 @@ before_install:
   - gem install bundler
   - gem update bundler
 rvm:
-  - 2.0.0
-  - 2.1.8
   - 2.2.4
   - 2.3.0
   - jruby-head
-  - rbx-2
-matrix:
-  allow_failures:
-    - rvm: rbx-2
diff --git a/Changes.md b/Changes.md
index 2bb37d84..52fdbcee 100644
--- a/Changes.md
+++ b/Changes.md
@@ -3,14 +3,13 @@
 4.2.0
 -----------
 
-- Remove Sinatra dependency.  Sidekiq's Web UI now uses Rack directly.
+- Enable development-mode code reloading.  **With Rails 5.0+, you don't need
+  to restart Sidekiq to pick up your Sidekiq::Worker changes anymore!** [#2457]
+- **Remove Sinatra dependency**.  Sidekiq's Web UI now uses Rack directly.
   Thank you to Sidekiq's newest committer, **badosu**, for writing the code
   and doing a lot of testing to ensure compatibility with many different
   3rd party plugins.  If your Web UI works with 4.1.4 but fails with
   4.2.0, please open an issue. [#3075]
-- Add support for development mode code reloading with Rails 5's new
-  thread-safe Interlock API.  With Rails 5, you no longer need to
-  restart Sidekiq when making code changes locally! [#2457]
 - Allow tuning of concurrency with the `RAILS_MAX_THREADS` env var. [#2985]
   This is the same var used by Puma so you can tune all of your systems
   the same way:
diff --git a/Gemfile b/Gemfile
index e10ca14c..bdca91d3 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,8 +1,8 @@
 source 'https://rubygems.org'
 gemspec
 
+gem 'rails', '5.0.0'
 gem "hiredis"
-gem 'rails', '~> 4.2'
 gem 'simplecov'
 gem 'minitest'
 gem 'minitest-utils'
@@ -23,7 +23,7 @@ platforms :mri do
   gem 'ruby-prof'
 end
 
-platforms :jruby do
-  gem 'jruby-openssl'
-  gem 'activerecord-jdbcsqlite3-adapter'
-end
+#platforms :jruby do
+  #gem 'jruby-openssl'
+  #gem 'activerecord-jdbcsqlite3-adapter'
+#end
diff --git a/lib/sidekiq.rb b/lib/sidekiq.rb
index ec971606..d1d4d78f 100644
--- a/lib/sidekiq.rb
+++ b/lib/sidekiq.rb
@@ -31,7 +31,8 @@ module Sidekiq
       heartbeat: [],
     },
     dead_max_jobs: 10_000,
-    dead_timeout_in_seconds: 180 * 24 * 60 * 60 # 6 months
+    dead_timeout_in_seconds: 180 * 24 * 60 * 60, # 6 months
+    reloader: proc { |&block| block.call },
   }
 
   DEFAULT_WORKER_OPTIONS = {
diff --git a/lib/sidekiq/cli.rb b/lib/sidekiq/cli.rb
index ed251f69..09ad91d1 100644
--- a/lib/sidekiq/cli.rb
+++ b/lib/sidekiq/cli.rb
@@ -229,7 +229,7 @@ module Sidekiq
           require 'sidekiq/rails'
           require File.expand_path("#{options[:require]}/config/environment.rb")
           ::Rails.application.eager_load!
-        else
+        elsif ::Rails::VERSION::MAJOR == 4
           # Painful contortions, see 1791 for discussion
           require File.expand_path("#{options[:require]}/config/application.rb")
           ::Rails::Application.initializer "sidekiq.eager_load" do
@@ -237,6 +237,10 @@ module Sidekiq
           end
           require 'sidekiq/rails'
           require File.expand_path("#{options[:require]}/config/environment.rb")
+        else
+          require 'sidekiq/rails'
+          require File.expand_path("#{options[:require]}/config/environment.rb")
+          Sidekiq.options[:reloader] = Sidekiq::Rails::Reloader.new
         end
         options[:tag] ||= default_tag
       else
diff --git a/lib/sidekiq/processor.rb b/lib/sidekiq/processor.rb
index f14e232c..6a346907 100644
--- a/lib/sidekiq/processor.rb
+++ b/lib/sidekiq/processor.rb
@@ -36,6 +36,7 @@ module Sidekiq
       @job = nil
       @thread = nil
       @strategy = (mgr.options[:fetch] || Sidekiq::BasicFetch).new(mgr.options)
+      @reloader = Sidekiq.options[:reloader]
     end
 
     def terminate(wait=false)
@@ -118,33 +119,35 @@ module Sidekiq
       jobstr = work.job
       queue = work.queue_name
 
-      ack = false
-      begin
-        job = Sidekiq.load_json(jobstr)
-        klass  = job['class'.freeze].constantize
-        worker = klass.new
-        worker.jid = job['jid'.freeze]
-
-        stats(worker, job, queue) do
-          Sidekiq.server_middleware.invoke(worker, job, queue) do
-            # Only ack if we either attempted to start this job or
-            # successfully completed it. This prevents us from
-            # losing jobs if a middleware raises an exception before yielding
-            ack = true
-            execute_job(worker, cloned(job['args'.freeze]))
-          end
-        end
-        ack = true
-      rescue Sidekiq::Shutdown
-        # Had to force kill this job because it didn't finish
-        # within the timeout.  Don't acknowledge the work since
-        # we didn't properly finish it.
+      @reloader.call do
         ack = false
-      rescue Exception => ex
-        handle_exception(ex, job || { :job => jobstr })
-        raise
-      ensure
-        work.acknowledge if ack
+        begin
+          job = Sidekiq.load_json(jobstr)
+          klass  = job['class'.freeze].constantize
+          worker = klass.new
+          worker.jid = job['jid'.freeze]
+
+          stats(worker, job, queue) do
+            Sidekiq.server_middleware.invoke(worker, job, queue) do
+              # Only ack if we either attempted to start this job or
+              # successfully completed it. This prevents us from
+              # losing jobs if a middleware raises an exception before yielding
+              ack = true
+              execute_job(worker, cloned(job['args'.freeze]))
+            end
+          end
+          ack = true
+        rescue Sidekiq::Shutdown
+          # Had to force kill this job because it didn't finish
+          # within the timeout.  Don't acknowledge the work since
+          # we didn't properly finish it.
+          ack = false
+        rescue Exception => ex
+          handle_exception(ex, job || { :job => jobstr })
+          raise
+        ensure
+          work.acknowledge if ack
+        end
       end
     end
 
diff --git a/lib/sidekiq/rails.rb b/lib/sidekiq/rails.rb
index a8f6b040..23b27376 100644
--- a/lib/sidekiq/rails.rb
+++ b/lib/sidekiq/rails.rb
@@ -35,5 +35,22 @@ module Sidekiq
     initializer 'sidekiq' do
       Sidekiq.hook_rails!
     end
+
+    class Reloader
+      def initialize(app = ::Rails.application)
+        Sidekiq.logger.debug "Enabling Rails 5+ live code reloading, so hot!" unless app.config.cache_classes
+        @app = app
+      end
+
+      def call
+        @app.reloader.wrap do
+          yield
+        end
+      end
+
+      def inspect
+        "#<Sidekiq::Rails::Reloader @app=#{@app.class.name}>"
+      end
+    end
   end if defined?(::Rails)
 end
diff --git a/myapp/Gemfile b/myapp/Gemfile
index 2777d0f8..495a0c87 100644
--- a/myapp/Gemfile
+++ b/myapp/Gemfile
@@ -1,21 +1,20 @@
 source 'https://rubygems.org'
 
+gem 'pry'
+gem 'sidekiq', :path => '..'
+gem 'rails', '5.0.0'
+
 platforms :ruby do
   gem 'sqlite3'
   gem 'redis-namespace'
 end
 
-platforms :jruby do
-  gem 'jruby-openssl'
-  gem 'activerecord-jdbcsqlite3-adapter'
-end
+#platforms :jruby do
+  #gem 'jruby-openssl'
+  #gem 'activerecord-jdbcsqlite3-adapter'
+#end
 
-gem 'rails', '~> 4.2'
-gem 'sidekiq', :path => '..'
 #gem 'ruby-prof'
 
 #de Does not work with jruby or rbx:
 #de gem 'pry-byebug'
-
-# sidekiq-web dependencies
-gem 'rack-protection'
diff --git a/sidekiq.gemspec b/sidekiq.gemspec
index b34449e9..624a9c36 100644
--- a/sidekiq.gemspec
+++ b/sidekiq.gemspec
@@ -22,5 +22,5 @@ Gem::Specification.new do |gem|
   gem.add_development_dependency      'redis-namespace', '~> 1.5', '>= 1.5.2'
   gem.add_development_dependency      'minitest', '~> 5.7', '>= 5.7.0'
   gem.add_development_dependency      'rake', '~> 10.0'
-  gem.add_development_dependency      'rails', '~> 4', '>= 3.2.0'
+  gem.add_development_dependency      'rails', '>= 3.2.0'
 end