diff --git a/lib/sphinx/integration/extensions/thinking_sphinx/last_indexing_time.rb b/lib/sphinx/integration/extensions/thinking_sphinx/last_indexing_time.rb
index f4198c9..4ce0116 100644
--- a/lib/sphinx/integration/extensions/thinking_sphinx/last_indexing_time.rb
+++ b/lib/sphinx/integration/extensions/thinking_sphinx/last_indexing_time.rb
@@ -1,12 +1,24 @@
 # coding: utf-8
 
-require 'redis-classy'
+require 'redis'
+require 'redis-namespace'
 
 module Sphinx::Integration::Extensions::ThinkingSphinx::LastIndexingTime
   extend ActiveSupport::Concern
 
   included do
-    class ThinkingSphinx::LastIndexing < ::Redis::Classy
+    class ThinkingSphinx::LastIndexing
+      def self.set(key, value)
+        redis.set(key, value)
+      end
+
+      def self.get(key)
+        redis.get(key)
+      end
+
+      def self.redis
+        @redis ||= Redis::Namespace.new(name, :redis => Redis.current)
+      end
     end
 
     # Public: Устанавливает время окончания последней успешной индексации.
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 5c26931..bea0e7d 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -7,21 +7,20 @@
 
 require 'sphinx/integration/railtie'
 
-require 'mock_redis'
-require 'redis-classy'
-
-Redis::Classy.db = MockRedis.new
-
 Combustion.initialize! :active_record
 
 require 'rspec/rails'
 
+require 'mock_redis'
+require 'redis-classy'
+
 RSpec.configure do |config|
   config.backtrace_exclusion_patterns = [/lib\/rspec\/(core|expectations|matchers|mocks)/]
   config.color_enabled = true
   config.order = 'random'
 
   config.before(:each) do
-    Redis::Classy.db = MockRedis.new
+    Redis.current = MockRedis.new
+    Redis::Classy.db = Redis.current
   end
 end
diff --git a/spec/sphinx/integration/extensions/thinking_sphinx/index/builder_spec.rb b/spec/sphinx/integration/extensions/thinking_sphinx/index/builder_spec.rb
index 68f7c22..0c9b67d 100644
--- a/spec/sphinx/integration/extensions/thinking_sphinx/index/builder_spec.rb
+++ b/spec/sphinx/integration/extensions/thinking_sphinx/index/builder_spec.rb
@@ -60,7 +60,8 @@
       end
     end
 
-    it { index.attributes.should have(4).item } # 3 internal + 1 user
+    # 4 internal (:sphinx_internal_id, :sphinx_deleted, :class_crc, :sphinx_internal_class) + 1 user
+    it { index.attributes.should have(5).item }
     it { index.attributes.select { |attr| attr.alias == :foo}.should be_present }
   end
 
diff --git a/spec/sphinx/integration/extensions/thinking_sphinx/last_indexing_time_spec.rb b/spec/sphinx/integration/extensions/thinking_sphinx/last_indexing_time_spec.rb
index e3cda9f..6535102 100644
--- a/spec/sphinx/integration/extensions/thinking_sphinx/last_indexing_time_spec.rb
+++ b/spec/sphinx/integration/extensions/thinking_sphinx/last_indexing_time_spec.rb
@@ -4,7 +4,7 @@
 describe ThinkingSphinx do
   let(:time) { Time.now.utc }
 
-  before { ThinkingSphinx::LastIndexing.db.flushdb }
+  before { ThinkingSphinx::LastIndexing.redis.flushdb }
   before { ThinkingSphinx.stub(:db_current_time).and_return(time) }
 
   it do
diff --git a/sphinx-integration.gemspec b/sphinx-integration.gemspec
index f5560d2..f818aab 100644
--- a/sphinx-integration.gemspec
+++ b/sphinx-integration.gemspec
@@ -19,6 +19,8 @@ Gem::Specification.new do |gem|
 
   gem.add_runtime_dependency 'redis-classy', '~> 1.2.0'
   gem.add_runtime_dependency 'redis-mutex', '~> 2.1.0'
+  gem.add_runtime_dependency 'redis', '~> 3.0.7'
+  gem.add_runtime_dependency 'redis-namespace', '~> 1.3.0'
   gem.add_runtime_dependency 'mysql2', '>= 0.2.19b5'
   gem.add_runtime_dependency 'pg'
   gem.add_runtime_dependency 'innertube'