diff --git a/.travis.yml b/.travis.yml
index e39bb3e99..bfc8edfd0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,8 @@ sudo: false
 rvm:
   - 1.9.3
   - 2.0.0
-  - 2.2
+  - 2.1
+  - 2.2.2
   - ruby-head
   - rbx-2
 
@@ -24,12 +25,18 @@ env:
   - "RAILS_VERSION=master"
 
 matrix:
-  include:
+  exclude:
+  - rvm: 1.9.3
+    env: RAILS_VERSION=master
+  - rvm: 2.0.0
+    env: RAILS_VERSION=master
   - rvm: 2.1
+    env: RAILS_VERSION=master
+  include:
+  - rvm: 2.2
     env: CAPTURE_STDERR=true
   - rvm: jruby-19mode
     env: JRUBY_OPTS='--server -Xcompile.invokedynamic=false -Xcli.debug=true --debug'
   allow_failures:
     - rvm: ruby-head
-    - env: "RAILS_VERSION=master"
   fast_finish: true
diff --git a/Gemfile b/Gemfile
index 1d96ba05e..9a386356f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,22 +11,23 @@ version = ENV['RAILS_VERSION'] || '4.2'
 
 if version == 'master'
   gem 'rack', github: 'rack/rack'
+  gem 'arel', github: 'rails/arel'
   git 'https://github.com/rails/rails.git' do
     gem 'railties'
     gem 'activesupport'
     gem 'activemodel'
     gem 'actionpack'
+    gem 'activerecord', group: :test
     # Rails 5
     gem 'actionview'
   end
-  # Rails 5
-  gem 'rails-controller-testing', github: 'rails/rails-controller-testing'
 else
   gem_version = "~> #{version}.0"
   gem 'railties', gem_version
   gem 'activesupport', gem_version
   gem 'activemodel', gem_version
   gem 'actionpack', gem_version
+  gem 'activerecord', gem_version, group: :test
 end
 
 # https://github.com/bundler/bundler/blob/89a8778c19269561926cea172acdcda241d26d23/lib/bundler/dependency.rb#L30-L54
@@ -36,11 +37,9 @@ end
 gem 'tzinfo-data', platforms: (@windows_platforms + [:jruby])
 
 group :test do
-  gem 'activerecord'
   gem 'sqlite3',                          platform: (@windows_platforms + [:ruby])
   gem 'activerecord-jdbcsqlite3-adapter', platform: :jruby
 
-  gem 'minitest-reporters', require: false, group: :development
   gem 'codeclimate-test-reporter', require: false
   gem 'simplecov', '~> 0.10', require: false, group: :development
 end
diff --git a/active_model_serializers.gemspec b/active_model_serializers.gemspec
index 1e438e2cb..3ccd9654e 100644
--- a/active_model_serializers.gemspec
+++ b/active_model_serializers.gemspec
@@ -41,10 +41,16 @@ Gem::Specification.new do |spec|
     # 'minitest'
     # 'thread_safe'
 
+  spec.add_development_dependency 'activerecord', rails_versions
+    # arel
+    # activesuport
+    # activemodel
+
   # Soft dependency for pagination
   spec.add_development_dependency 'kaminari', ' ~> 0.16.3'
   spec.add_development_dependency 'will_paginate', '~> 3.0', '>= 3.0.7'
 
   spec.add_development_dependency 'bundler', '~> 1.6'
   spec.add_development_dependency 'timecop', '~> 0.7'
+  spec.add_development_dependency 'minitest-reporters'
 end
diff --git a/lib/active_model/serializer.rb b/lib/active_model/serializer.rb
index b513216fa..3975391c8 100644
--- a/lib/active_model/serializer.rb
+++ b/lib/active_model/serializer.rb
@@ -152,7 +152,7 @@ def self.fragmented(serializer)
     # @todo require less code comments. See
     # https://github.com/rails-api/active_model_serializers/pull/1249#issuecomment-146567837
     def self.cache(options = {})
-      self._cache = ActionController::Base.cache_store if Rails.configuration.action_controller.perform_caching
+      self._cache = ActiveModelSerializers.config.cache_store if ActiveModelSerializers.config.perform_caching
       self._cache_key = options.delete(:key)
       self._cache_only = options.delete(:only)
       self._cache_except = options.delete(:except)
diff --git a/lib/active_model/serializer/railtie.rb b/lib/active_model/serializer/railtie.rb
index 533a191c3..18bb513c9 100644
--- a/lib/active_model/serializer/railtie.rb
+++ b/lib/active_model/serializer/railtie.rb
@@ -8,6 +8,13 @@ class Railtie < Rails::Railtie
       end
     end
 
+    initializer 'active_model_serializers.caching' do
+      ActiveSupport.on_load(:action_controller) do
+        ActiveModelSerializers.config.cache_store     = ActionController::Base.cache_store
+        ActiveModelSerializers.config.perform_caching = Rails.configuration.action_controller.perform_caching
+      end
+    end
+
     initializer 'generators' do |app|
       app.load_generators
       require 'generators/serializer/resource_override'
diff --git a/lib/active_model_serializers.rb b/lib/active_model_serializers.rb
index c7a4d1d43..a3e2ff006 100644
--- a/lib/active_model_serializers.rb
+++ b/lib/active_model_serializers.rb
@@ -5,6 +5,10 @@
 module ActiveModelSerializers
   mattr_accessor(:logger) { ActiveSupport::TaggedLogging.new(ActiveSupport::Logger.new(STDOUT)) }
 
+  def self.config
+    ActiveModel::Serializer.config
+  end
+
   extend ActiveSupport::Autoload
   autoload :Model
   autoload :Callbacks
diff --git a/test/action_controller/json_api/pagination_test.rb b/test/action_controller/json_api/pagination_test.rb
index 4286ed886..7c8ebec26 100644
--- a/test/action_controller/json_api/pagination_test.rb
+++ b/test/action_controller/json_api/pagination_test.rb
@@ -53,7 +53,7 @@ def test_render_pagination_links_with_will_paginate
             'next' => "#{WILL_PAGINATE_URI}?page%5Bnumber%5D=3&page%5Bsize%5D=1",
             'last' => "#{WILL_PAGINATE_URI}?page%5Bnumber%5D=3&page%5Bsize%5D=1" }
 
-          get :render_pagination_using_will_paginate, page: { number: 2, size: 1 }
+          get :render_pagination_using_will_paginate, params: { page: { number: 2, size: 1 } }
           response = JSON.parse(@response.body)
           assert_equal expected_links, response['links']
         end
@@ -62,7 +62,7 @@ def test_render_only_last_and_next_pagination_links
           expected_links = { 'self' => "#{WILL_PAGINATE_URI}?page%5Bnumber%5D=1&page%5Bsize%5D=2",
             'next' => "#{WILL_PAGINATE_URI}?page%5Bnumber%5D=2&page%5Bsize%5D=2",
             'last' => "#{WILL_PAGINATE_URI}?page%5Bnumber%5D=2&page%5Bsize%5D=2" }
-          get :render_pagination_using_will_paginate, page: { number: 1, size: 2 }
+          get :render_pagination_using_will_paginate, params: { page: { number: 1, size: 2 } }
           response = JSON.parse(@response.body)
           assert_equal expected_links, response['links']
         end
@@ -73,7 +73,7 @@ def test_render_pagination_links_with_kaminari
             'prev' => "#{KAMINARI_URI}?page%5Bnumber%5D=1&page%5Bsize%5D=1",
             'next' => "#{KAMINARI_URI}?page%5Bnumber%5D=3&page%5Bsize%5D=1",
             'last' => "#{KAMINARI_URI}?page%5Bnumber%5D=3&page%5Bsize%5D=1" }
-          get :render_pagination_using_kaminari, page: { number: 2, size: 1 }
+          get :render_pagination_using_kaminari, params: { page: { number: 2, size: 1 } }
           response = JSON.parse(@response.body)
           assert_equal expected_links, response['links']
         end
@@ -82,7 +82,7 @@ def test_render_only_prev_and_first_pagination_links
           expected_links = { 'self' => "#{KAMINARI_URI}?page%5Bnumber%5D=3&page%5Bsize%5D=1",
             'first' => "#{KAMINARI_URI}?page%5Bnumber%5D=1&page%5Bsize%5D=1",
             'prev' => "#{KAMINARI_URI}?page%5Bnumber%5D=2&page%5Bsize%5D=1" }
-          get :render_pagination_using_kaminari, page: { number: 3, size: 1 }
+          get :render_pagination_using_kaminari, params: { page: { number: 3, size: 1 } }
           response = JSON.parse(@response.body)
           assert_equal expected_links, response['links']
         end
@@ -91,7 +91,7 @@ def test_render_only_last_and_next_pagination_links_with_additional_params
           expected_links = { 'self' => "#{WILL_PAGINATE_URI}?page%5Bnumber%5D=1&page%5Bsize%5D=2&teste=additional",
             'next' => "#{WILL_PAGINATE_URI}?page%5Bnumber%5D=2&page%5Bsize%5D=2&teste=additional",
             'last' => "#{WILL_PAGINATE_URI}?page%5Bnumber%5D=2&page%5Bsize%5D=2&teste=additional" }
-          get :render_pagination_using_will_paginate, page: { number: 1, size: 2 }, teste: 'additional'
+          get :render_pagination_using_will_paginate, params: { page: { number: 1, size: 2 }, teste: 'additional' }
           response = JSON.parse(@response.body)
           assert_equal expected_links, response['links']
         end
@@ -100,13 +100,13 @@ def test_render_only_prev_and_first_pagination_links_with_additional_params
           expected_links = { 'self' => "#{KAMINARI_URI}?page%5Bnumber%5D=3&page%5Bsize%5D=1&teste=additional",
             'first' => "#{KAMINARI_URI}?page%5Bnumber%5D=1&page%5Bsize%5D=1&teste=additional",
             'prev' => "#{KAMINARI_URI}?page%5Bnumber%5D=2&page%5Bsize%5D=1&teste=additional" }
-          get :render_pagination_using_kaminari, page: { number: 3, size: 1 }, teste: 'additional'
+          get :render_pagination_using_kaminari, params: { page: { number: 3, size: 1 }, teste: 'additional' }
           response = JSON.parse(@response.body)
           assert_equal expected_links, response['links']
         end
 
         def test_array_without_pagination_links
-          get :render_array_without_pagination_links, page: { number: 2, size: 1 }
+          get :render_array_without_pagination_links, params: { page: { number: 2, size: 1 } }
           response = JSON.parse(@response.body)
           refute response.key? 'links'
         end
diff --git a/test/action_controller/serialization_scope_name_test.rb b/test/action_controller/serialization_scope_name_test.rb
index 75220be29..5969f5226 100644
--- a/test/action_controller/serialization_scope_name_test.rb
+++ b/test/action_controller/serialization_scope_name_test.rb
@@ -12,7 +12,7 @@ def admin?
   class UserTestController < ActionController::Base
     protect_from_forgery
 
-    before_filter { request.format = :json }
+    before_action { request.format = :json }
 
     def current_user
       User.new(id: 1, name: 'Pete', admin: false)
@@ -43,7 +43,7 @@ class AdminUserTestController < ActionController::Base
     protect_from_forgery
 
     serialization_scope :current_admin
-    before_filter { request.format = :json }
+    before_action { request.format = :json }
 
     def current_admin
       User.new(id: 2, name: 'Bob', admin: true)
diff --git a/test/adapter/fragment_cache_test.rb b/test/adapter/fragment_cache_test.rb
index fc6c3feb4..cacc156c3 100644
--- a/test/adapter/fragment_cache_test.rb
+++ b/test/adapter/fragment_cache_test.rb
@@ -4,6 +4,7 @@ class Serializer
     module Adapter
       class FragmentCacheTest < Minitest::Test
         def setup
+          super
           @spam            = Spam::UnrelatedLink.new(id: 'spam-id-1')
           @author          = Author.new(name: 'Joao M. D. Moura')
           @role            = Role.new(name: 'Great Author', description: nil)
diff --git a/test/fixtures/poro.rb b/test/fixtures/poro.rb
index 28ee08d52..573b3fa8d 100644
--- a/test/fixtures/poro.rb
+++ b/test/fixtures/poro.rb
@@ -16,6 +16,12 @@ def method_missing(meth, *args)
     end
   end
 
+  # required for ActiveModel::AttributeAssignment#_assign_attribute
+  # in Rails 5
+  def respond_to_missing?(method_name, _include_private = false)
+    attributes.key?(method_name.to_s.tr('=', '').to_sym) || super
+  end
+
   def cache_key_with_digest
     "#{cache_key}/#{FILE_DIGEST}"
   end
diff --git a/test/support/rails5_shims.rb b/test/support/rails5_shims.rb
new file mode 100644
index 000000000..5677d1099
--- /dev/null
+++ b/test/support/rails5_shims.rb
@@ -0,0 +1,29 @@
+module Rails5Shims
+  module ControllerTests
+    # https://github.com/rails/rails/blob/b217354/actionpack/lib/action_controller/test_case.rb
+    REQUEST_KWARGS = [:params, :session, :flash, :method, :body, :xhr]
+
+    # Fold kwargs from test request into args
+    # Band-aid for DEPRECATION WARNING
+    def get(path, *args)
+      hash = args && args[0]
+      if hash.respond_to?(:key)
+        Rails5Shims::ControllerTests::REQUEST_KWARGS.each do |kwarg|
+          next unless hash.key?(kwarg)
+          hash.merge! hash.delete(kwarg)
+        end
+      end
+      super
+    end
+
+    # Uncomment for debugging where the kwargs warnings come from
+    # def non_kwarg_request_warning
+    #   super.tap do
+    #     STDOUT.puts caller[2..3]
+    #   end
+    # end
+  end
+end
+if Rails::VERSION::MAJOR < 5
+  ActionController::TestCase.send :include, Rails5Shims::ControllerTests
+end
diff --git a/test/support/rails_app.rb b/test/support/rails_app.rb
index c567de2db..ced830dc5 100644
--- a/test/support/rails_app.rb
+++ b/test/support/rails_app.rb
@@ -1,14 +1,18 @@
-class Foo < Rails::Application
+class ActiveModelSerializers::RailsApplication < Rails::Application
   if Rails::VERSION::MAJOR >= 4
     config.eager_load = false
+
     config.secret_key_base = 'abc123'
-    config.action_controller.perform_caching = true
+
     config.active_support.test_order = :random
+
     config.logger = Logger.new(nil)
+
+    config.action_controller.perform_caching = true
     ActionController::Base.cache_store = :memory_store
   end
 end
-Foo.initialize!
+ActiveModelSerializers::RailsApplication.initialize!
 
 module TestHelper
   Routes = ActionDispatch::Routing::RouteSet.new
diff --git a/test/support/test_case.rb b/test/support/test_case.rb
index 66e8648d2..8f1afe79a 100644
--- a/test/support/test_case.rb
+++ b/test/support/test_case.rb
@@ -2,4 +2,18 @@
   def setup
     @routes = TestHelper::Routes
   end
+
+  # For Rails5
+  # https://github.com/rails/rails/commit/ca83436d1b3b6cedd1eca2259f65661e69b01909#diff-b9bbf56e85d3fe1999f16317f2751e76L17
+  def assigns(key = nil)
+    assigns = {}.with_indifferent_access
+    @controller.view_assigns.each { |k, v| assigns.regular_writer(k, v) }
+    key.nil? ? assigns : assigns[key]
+  end
+
+  # Rails5: Uncomment for debugging where the warnings come from
+  # def non_kwarg_request_warning
+  #   super
+  #   STDOUT.puts caller[2..3]
+  # end
 end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index f494eba12..9d0698207 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -64,6 +64,8 @@ def Minitest.after_run(&block)
 
 require 'support/serialization_testing'
 
+require 'support/rails5_shims'
+
 require 'fixtures/active_record'
 
 require 'fixtures/poro'