diff --git a/Gemfile b/Gemfile
index b3f93c953..804c5aae4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -18,9 +18,7 @@
 source 'https://rubygems.org'
 
 gem "rake", "~> 12"
-
-gem 'elasticsearch-extensions'
-
+gem "elasticsearch"
 gem "pry"
 gem "ansi"
 gem "cane"
diff --git a/README.md b/README.md
index 220816e6e..96c958674 100644
--- a/README.md
+++ b/README.md
@@ -160,11 +160,7 @@ You can also unit, integration, or both tests for all sub-projects from the top-
 
     rake test:all
 
-The test suite expects an Elasticsearch cluster running on port 9250, and **will delete all the data**. You can launch an isolated, in-memory Elasticsearch cluster with the following Rake task:
-
-    TEST_CLUSTER_COMMAND=/tmp/builds/elasticsearch-2.0.0-SNAPSHOT/bin/elasticsearch TEST_CLUSTER_NODES=1 bundle exec rake test:cluster:start
-
-See more information in the documentation  for the [`elasticsearch-extensions`](https://github.com/elastic/elasticsearch-ruby/tree/master/elasticsearch-extensions#testcluster) gem.
+The test suite expects an Elasticsearch cluster running on port 9250, and **will delete all the data**.
 
 ## License
 
diff --git a/Rakefile b/Rakefile
index 9e3181a68..ee33d5724 100644
--- a/Rakefile
+++ b/Rakefile
@@ -16,6 +16,7 @@
 # under the License.
 
 require 'pathname'
+require 'elasticsearch'
 
 subprojects = ['elasticsearch-rails', 'elasticsearch-persistence']
 subprojects << 'elasticsearch-model' unless defined?(JRUBY_VERSION)
@@ -97,26 +98,6 @@ namespace :test do
     end
   end
 
-  desc "Run Elasticsearch (Docker)"
-  task :setup_elasticsearch_docker do
-    begin
-      sh <<-COMMAND.gsub(/^\s*/, '').gsub(/\s{1,}/, ' ')
-          docker run -d=true \
-            --env "discovery.type=single-node" \
-            --env "cluster.name=elasticsearch-rails" \
-            --env "http.port=9200" \
-            --env "cluster.routing.allocation.disk.threshold_enabled=false" \
-            --publish 9250:9200 \
-            --rm \
-            docker.elastic.co/elasticsearch/elasticsearch:${ELASTICSEARCH_VERSION}
-      COMMAND
-      require 'elasticsearch/extensions/test/cluster'
-      Elasticsearch::Extensions::Test::Cluster::Cluster.new(version: ENV['ELASTICSEARCH_VERSION'],
-                                                            number_of_nodes: 1).wait_for_green
-    rescue
-    end
-  end
-
   desc "Setup MongoDB (Docker)"
   task :setup_mongodb_docker do
     begin
@@ -167,26 +148,6 @@ namespace :test do
       puts "\n"
     end
   end
-
-  namespace :cluster do
-    desc "Start Elasticsearch nodes for tests"
-    task :start do
-      require 'elasticsearch/extensions/test/cluster'
-      Elasticsearch::Extensions::Test::Cluster.start
-    end
-
-    desc "Stop Elasticsearch nodes for tests"
-    task :stop do
-      require 'elasticsearch/extensions/test/cluster'
-      Elasticsearch::Extensions::Test::Cluster.stop
-    end
-
-    task :status do
-      require 'elasticsearch/extensions/test/cluster'
-      (puts "\e[31m[!] Test cluster not running\e[0m"; exit(1)) unless Elasticsearch::Extensions::Test::Cluster.running?
-      Elasticsearch::Extensions::Test::Cluster.__print_cluster_info(ENV['TEST_CLUSTER_PORT'] || 9250)
-    end
-  end
 end
 
 
diff --git a/elasticsearch-model/elasticsearch-model.gemspec b/elasticsearch-model/elasticsearch-model.gemspec
index 8f47becd0..1bad4c5c8 100644
--- a/elasticsearch-model/elasticsearch-model.gemspec
+++ b/elasticsearch-model/elasticsearch-model.gemspec
@@ -48,7 +48,6 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'activemodel', '> 3'
   s.add_development_dependency 'bundler'
   s.add_development_dependency 'cane'
-  s.add_development_dependency 'elasticsearch-extensions'
   s.add_development_dependency 'kaminari'
   s.add_development_dependency 'minitest'
   s.add_development_dependency 'mocha'
diff --git a/elasticsearch-persistence/elasticsearch-persistence.gemspec b/elasticsearch-persistence/elasticsearch-persistence.gemspec
index ea21fadb4..b09aaee03 100644
--- a/elasticsearch-persistence/elasticsearch-persistence.gemspec
+++ b/elasticsearch-persistence/elasticsearch-persistence.gemspec
@@ -53,8 +53,6 @@ Gem::Specification.new do |s|
 
   s.add_development_dependency "rails", '> 4'
 
-  s.add_development_dependency "elasticsearch-extensions"
-
   s.add_development_dependency "minitest"
   s.add_development_dependency "test-unit"
   s.add_development_dependency "shoulda-context"
diff --git a/elasticsearch-rails/elasticsearch-rails.gemspec b/elasticsearch-rails/elasticsearch-rails.gemspec
index 400004a77..224e7fa36 100644
--- a/elasticsearch-rails/elasticsearch-rails.gemspec
+++ b/elasticsearch-rails/elasticsearch-rails.gemspec
@@ -48,7 +48,6 @@ Gem::Specification.new do |s|
 
   s.add_development_dependency 'bundler'
   s.add_development_dependency 'cane'
-  s.add_development_dependency 'elasticsearch-extensions'
   s.add_development_dependency 'lograge'
   s.add_development_dependency 'minitest'
   s.add_development_dependency 'mocha'