diff --git a/.rubocop.yml b/.rubocop.yml
index 84b73c5..d8ca2ab 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,5 +1,7 @@
 inherit_from: .rubocop_todo.yml
 
+require: rubocop-rspec
+
 AllCops:
   Exclude:
     - 'spec/dummy/db/**/*.rb'
@@ -19,3 +21,11 @@ Metrics/AbcSize:
 Metrics/MethodLength:
   Exclude:
     - 'app/controllers/logux_controller.rb'
+
+RSpec/DescribeClass:
+  Exclude:
+    - 'spec/logux/tasks/*.rb'
+    - 'spec/requests/*.rb'
+
+RSpec/ExpectChange:
+  EnforcedStyle: block
diff --git a/Gemfile.lock b/Gemfile.lock
index fd3ee0b..5ae2be5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -180,6 +180,8 @@ GEM
       rainbow (>= 2.2.2, < 4.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (~> 1.0, >= 1.0.1)
+    rubocop-rspec (1.27.0)
+      rubocop (>= 0.56.0)
     ruby-progressbar (1.9.0)
     safe_yaml (1.0.4)
     simplecov (0.16.1)
@@ -229,6 +231,7 @@ DEPENDENCIES
   rspec-live_controllers
   rspec-rails
   rubocop
+  rubocop-rspec
   simplecov
   sqlite3
   timecop
diff --git a/logux_rails.gemspec b/logux_rails.gemspec
index c623bb4..067d16d 100644
--- a/logux_rails.gemspec
+++ b/logux_rails.gemspec
@@ -37,6 +37,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rspec-live_controllers'
   spec.add_development_dependency 'rspec-rails'
   spec.add_development_dependency 'rubocop'
+  spec.add_development_dependency 'rubocop-rspec'
   spec.add_development_dependency 'simplecov'
   spec.add_development_dependency 'sqlite3'
   spec.add_development_dependency 'timecop'
diff --git a/spec/logux/action_caller_spec.rb b/spec/logux/action_caller_spec.rb
index f361f35..7ddabb4 100644
--- a/spec/logux/action_caller_spec.rb
+++ b/spec/logux/action_caller_spec.rb
@@ -8,10 +8,8 @@
   let(:meta) { create(:logux_meta) }
 
   describe '#call!' do
-    subject { action_caller.call! }
-
     it 'raise error' do
-      expect { subject }.to raise_error(Logux::NoActionError)
+      expect { action_caller.call! }.to raise_error(Logux::NoActionError)
     end
 
     context 'when action defined' do
@@ -25,6 +23,8 @@ def add
         end
       end
 
+      let(:result) { action_caller.call! }
+
       after do
         Actions::User.send :undef_method, :add
         Actions.send :remove_const, :User
@@ -32,7 +32,7 @@ def add
       end
 
       it 'return ok' do
-        expect(subject.status).to eq(:ok)
+        expect(result.status).to eq(:ok)
       end
     end
   end
diff --git a/spec/logux/action_controller_spec.rb b/spec/logux/action_controller_spec.rb
index 2dd20cf..256b079 100644
--- a/spec/logux/action_controller_spec.rb
+++ b/spec/logux/action_controller_spec.rb
@@ -9,18 +9,21 @@
   let(:meta) { Logux::Meta.new }
 
   describe '#respond' do
-    subject { action_controller.respond(:processed) }
+    let(:response) { action_controller.respond(:processed) }
 
     it 'returns logux response' do
-      expect(subject.status).to eq(:processed)
-      expect(subject.action).to eq(action)
-      expect(subject.meta).to have_key(:time)
-      expect(subject.custom_data).to be_nil
+      expect(response).to have_attributes(
+        status: :processed, action: action, custom_data: nil
+      )
+    end
+
+    it 'sets the meta with time' do
+      expect(response.meta).to have_key(:time)
     end
   end
 
   describe '.verify_authorized!' do
-    subject { described_class.verify_authorized! }
+    let(:verify_authorized!) { described_class.verify_authorized! }
 
     around do |example|
       Logux.configuration.verify_authorized = false
@@ -29,7 +32,7 @@
     end
 
     it 'sets to true' do
-      expect { subject }
+      expect { verify_authorized! }
         .to change { Logux.configuration.verify_authorized }
         .from(false)
         .to(true)
@@ -37,12 +40,12 @@
   end
 
   describe '.unverify_authorized!' do
-    subject { described_class.unverify_authorized! }
+    let(:unverify_authorized!) { described_class.unverify_authorized! }
 
     before { Logux.configuration.verify_authorized = true }
 
     it 'sets to false' do
-      expect { subject }
+      expect { unverify_authorized! }
         .to change { Logux.configuration.verify_authorized }
         .from(true)
         .to(false)
diff --git a/spec/logux/actions_spec.rb b/spec/logux/actions_spec.rb
index 6a92a71..ba9f30c 100644
--- a/spec/logux/actions_spec.rb
+++ b/spec/logux/actions_spec.rb
@@ -8,24 +8,24 @@
   describe '#action_type' do
     subject { actions.action_type }
 
-    it { should eq 'add' }
+    it { is_expected.to eq 'add' }
   end
 
   describe '#action_name' do
     subject { actions.action_name }
 
-    it { should eq 'user' }
+    it { is_expected.to eq 'user' }
   end
 
   describe '#channel_name' do
     subject { actions.channel_name }
 
-    it { should eq 'project' }
+    it { is_expected.to eq 'project' }
   end
 
   describe '#channel_id' do
     subject { actions.channel_id }
 
-    it { should eq '123' }
+    it { is_expected.to eq '123' }
   end
 end
diff --git a/spec/logux/add_spec.rb b/spec/logux/add_spec.rb
index ac2fdf9..f45064b 100644
--- a/spec/logux/add_spec.rb
+++ b/spec/logux/add_spec.rb
@@ -6,8 +6,6 @@
   let(:request) { described_class.new }
 
   describe '#call' do
-    subject { request.call(data, meta: meta) }
-
     let(:data) { [{ id: 1 }, { id: 2 }] }
     let(:meta) { create(:logux_meta) }
     let(:logux_request) do
@@ -19,7 +17,7 @@
     end
 
     it 'return processed' do
-      expect { subject }.to send_to_logux(logux_request)
+      expect { request.call(data, meta: meta) }.to send_to_logux(logux_request)
     end
   end
 end
diff --git a/spec/logux/channel_controller_spec.rb b/spec/logux/channel_controller_spec.rb
index 19dd7cc..65ea39f 100644
--- a/spec/logux/channel_controller_spec.rb
+++ b/spec/logux/channel_controller_spec.rb
@@ -9,11 +9,11 @@
   let(:meta) { Logux::Meta.new }
 
   describe '#subscribe' do
-    subject { channel_controller.subscribe }
+    let(:subscribe) { channel_controller.subscribe }
 
     context 'when ActiveRecord defined' do
       it 'tries to find record by chanel data' do
-        expect { subject }.to send_to_logux
+        expect { subscribe }.to send_to_logux
       end
     end
   end
diff --git a/spec/logux/class_finder_spec.rb b/spec/logux/class_finder_spec.rb
index 7a93dee..401964a 100644
--- a/spec/logux/class_finder_spec.rb
+++ b/spec/logux/class_finder_spec.rb
@@ -6,22 +6,22 @@
   let(:finder) { described_class.new(params) }
 
   describe '#class_name' do
-    subject { finder.class_name }
+    let(:class_name) { finder.class_name }
 
     let(:params) { create(:logux_actions_add, type: 'test/test/name/try/user/add') }
 
     it 'returns nested classes' do
-      expect(subject).to eq('Test::Test::Name::Try::User')
+      expect(class_name).to eq('Test::Test::Name::Try::User')
     end
   end
 
   describe '#find_policy_class' do
-    subject { finder.find_policy_class }
+    let(:policy_class) { finder.find_policy_class }
 
     let(:params) { create(:logux_actions_add, type: 'test/test/name/try/user/add') }
 
     it 'raise an error' do
-      expect { subject }.to raise_error(Logux::NoPolicyError)
+      expect { policy_class }.to raise_error(Logux::NoPolicyError)
     end
   end
 end
diff --git a/spec/logux/client_spec.rb b/spec/logux/client_spec.rb
index 7528381..f54b688 100644
--- a/spec/logux/client_spec.rb
+++ b/spec/logux/client_spec.rb
@@ -7,10 +7,8 @@
   let(:params) { create(:logux_actions_add) }
 
   describe '#post' do
-    subject { client.post(params) }
-
     it 'performs request' do
-      expect { subject }.to send_to_logux(params)
+      expect { client.post(params) }.to send_to_logux(params)
     end
   end
 end
diff --git a/spec/logux/node_spec.rb b/spec/logux/node_spec.rb
index c779c57..81537b9 100644
--- a/spec/logux/node_spec.rb
+++ b/spec/logux/node_spec.rb
@@ -6,10 +6,10 @@
   let(:node) { described_class.instance }
 
   describe '#generate_action_id' do
-    subject { node.generate_action_id }
+    let(:action_id) { node.generate_action_id }
 
     it 'returns correct id' do
-      expect(subject).to match(/^[0-9]{13} server:.{8} 0$/)
+      expect(action_id).to match(/^[0-9]{13} server:.{8} 0$/)
     end
 
     context 'with action at the same time', timecop: true do
@@ -20,20 +20,20 @@
       end
 
       it 'returns 1 in sequence' do
-        expect(subject).to match(/^[0-9]{13} server:.{8} 1$/)
+        expect(action_id).to match(/^[0-9]{13} server:.{8} 1$/)
       end
     end
   end
 
   describe '#node_id' do
-    subject { node.node_id }
+    let(:node_id) { node.node_id }
 
     it 'generates nanoid' do
-      expect(subject).not_to be_empty
+      expect(node_id).not_to be_empty
     end
 
     it "doesn't change from call to call" do
-      expect(subject).to eq(node.node_id)
+      expect(node_id).to eq(node.node_id)
     end
   end
 end
diff --git a/spec/logux/policy_caller_spec.rb b/spec/logux/policy_caller_spec.rb
index aa6d4e3..6d1da1f 100644
--- a/spec/logux/policy_caller_spec.rb
+++ b/spec/logux/policy_caller_spec.rb
@@ -6,14 +6,20 @@
   let(:policy_caller) { described_class.new(action: action, meta: meta) }
 
   describe '.call!' do
-    subject { policy_caller.call! }
+    let(:call!) { policy_caller.call! }
 
     let(:action) { Logux::Actions.new(type: 'test/test') }
     let(:meta) { {} }
 
-    it 'doesn\'t raise an error' do
-      expect(Logux.logger).to receive(:warn).once
-      subject
+    context 'when request is not verified' do
+      before do
+        allow(Logux.logger).to receive(:warn)
+        call!
+      end
+
+      it 'doesn\'t raise an error' do
+        expect(Logux.logger).to have_received(:warn).once
+      end
     end
 
     context 'when verify_authorized' do
@@ -24,7 +30,7 @@
       end
 
       it 'raises an error' do
-        expect { subject }.to raise_error(Logux::NoPolicyError)
+        expect { call! }.to raise_error(Logux::NoPolicyError)
       end
     end
   end
diff --git a/spec/logux_spec.rb b/spec/logux_spec.rb
index 258c71c..194a404 100644
--- a/spec/logux_spec.rb
+++ b/spec/logux_spec.rb
@@ -6,21 +6,20 @@
   end
 
   describe '.add' do
-    subject { described_class.add(type) }
+    before { described_class.add(type) }
 
     let(:type) { [] }
 
     it 'makes request' do
-      subject
       expect(WebMock).to have_requested(:post, Logux.configuration.logux_host)
     end
   end
 
   describe '.generate_action_id' do
-    subject { described_class.generate_action_id }
+    let(:action_id) { described_class.generate_action_id }
 
     it 'returns correct action id' do
-      expect(subject).not_to be_empty
+      expect(action_id).not_to be_empty
     end
   end
 end
diff --git a/spec/requests/request_from_logux_server_spec.rb b/spec/requests/request_from_logux_server_spec.rb
index 57d60e7..0881413 100644
--- a/spec/requests/request_from_logux_server_spec.rb
+++ b/spec/requests/request_from_logux_server_spec.rb
@@ -3,11 +3,12 @@
 require 'rails_helper'
 
 describe 'Logux response' do
-  subject do
+  let(:request_logux) do
     post('/logux',
          params: logux_params,
          as: :json)
   end
+
   let(:password) { Logux.configuration.password }
 
   let(:logux_params) do
@@ -23,21 +24,22 @@
       ] }
   end
   let(:params) { Logux.configuration.password }
-  let(:logux_response) do
-    [
-      ['processed', '219_856_768 clientid 0'],
-      ['processed', '219_856_768 clientid 0']
-    ]
-  end
 
-  it 'does return correct body' do
-    subject
-    expect(response.stream).to have_chunk(['approved', '219_856_768 clientid 0'])
-    expect(response.stream).to have_chunk(logux_response[0])
-    expect(response.stream).to have_chunk(logux_response[1])
+  context 'when authorized' do
+    before { request_logux }
+
+    it 'returns approved chunk' do
+      expect(response.stream).to have_chunk(['approved', '219_856_768 clientid 0'])
+    end
+
+    it 'returns processed chunk' do
+      expect(response.stream).to have_chunk(['processed', '219_856_768 clientid 0'])
+    end
   end
 
   context 'when no authorized' do
+    before { request_logux }
+
     let(:logux_params) do
       { version: 0,
         password: password,
@@ -52,16 +54,16 @@
     end
 
     it 'does return correct body' do
-      subject
       expect(response.stream).to have_chunk(logux_response)
     end
   end
 
   context 'when password wrong' do
+    before { request_logux }
+
     let(:password) { '12345' }
 
     it 'does return error' do
-      subject
       expect(response.stream).to start_from_chunk([:error])
     end
   end
@@ -82,7 +84,7 @@
     end
 
     it 'returns correct chunk' do
-      expect { subject }.to change { logux_store.size }.by(1)
+      expect { request_logux }.to change { logux_store.size }.by(1)
     end
   end
 end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index fdfc86f..91639be 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -8,7 +8,10 @@
                                            Coveralls::SimpleCov::Formatter
                                          ])
 Coveralls.wear!
-SimpleCov.start
+SimpleCov.start do
+  add_filter '/spec/'
+  add_filter '/lib/logux/test/'
+end
 
 require 'bundler/setup'
 require 'factory_bot'