diff --git a/.github/workflows/rspec.yml b/.github/workflows/rspec.yml
index 39ac37a8..891cbcd9 100644
--- a/.github/workflows/rspec.yml
+++ b/.github/workflows/rspec.yml
@@ -27,8 +27,6 @@ jobs:
         - ruby: 2.6.5
           gemfile: "Gemfile"
         - ruby: 2.5.7
-          gemfile: "Gemfile"
-        - ruby: 2.4.9
           gemfile: "gemfiles/activerecord42.gemfile"
     steps:
     - uses: actions/checkout@v2
diff --git a/.rubocop.yml b/.rubocop.yml
index bc8cc306..0301eb8c 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,6 +1,6 @@
 require:
   # add after moving docs to another tool
-  - 'standard/cop/semantic_blocks'
+  - 'standard/cop/block_single_line_braces'
   - 'rubocop-md'
 
 inherit_gem:
@@ -19,10 +19,11 @@ AllCops:
 Markdown:
   WarnInvalid: true
 
-Standard/SemanticBlocks:
-  Enabled: false
-
 Lint/Void:
   Exclude:
     - 'docs/README.md'
     - 'README.md'
+
+Lint/ConstantDefinitionInBlock:
+  Exclude:
+    - 'spec/**/*'
diff --git a/clowne.gemspec b/clowne.gemspec
index 558cbcb3..8e7df009 100644
--- a/clowne.gemspec
+++ b/clowne.gemspec
@@ -29,8 +29,8 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rake', '~> 12.3', '>= 12.3.3'
   spec.add_development_dependency 'rspec', '~> 3.0'
   spec.add_development_dependency 'factory_bot', '~> 5'
-  spec.add_development_dependency 'rubocop', '~> 0.75.0'
-  spec.add_development_dependency 'rubocop-md', '~> 0.3.0'
-  spec.add_development_dependency 'rubocop-rspec', '~> 1.36.0'
-  spec.add_development_dependency 'standard', '~> 0.1.5'
+  spec.add_development_dependency 'rubocop', '~> 1.22'
+  spec.add_development_dependency 'rubocop-md', '~> 1'
+  spec.add_development_dependency 'rubocop-rspec', '~> 2.5'
+  spec.add_development_dependency 'standard', '~> 1.4.0'
 end
diff --git a/docs/.rubocop.yml b/docs/.rubocop.yml
index c04c5300..81ce83fb 100644
--- a/docs/.rubocop.yml
+++ b/docs/.rubocop.yml
@@ -8,11 +8,8 @@ Lint/Void:
 Metrics/AbcSize:
   Enabled: false
 
-Standard/SemanticBlocks:
-  Enabled: false
-
 Metrics/BlockLength:
   Enabled: false
 
-Metrics/LineLength:
+Layout/LineLength:
   Enabled: false
diff --git a/docs/parameters.md b/docs/parameters.md
index 7eddf19f..b61b73d6 100644
--- a/docs/parameters.md
+++ b/docs/parameters.md
@@ -75,7 +75,7 @@ class UserCloner < Clowne::Cloner
     include_association :profile, params: Proc.new do |params, user|
       {
         name: params[:profile][:name],
-        email: user.email,
+        email: user.email
       }
     end
   end
diff --git a/lib/clowne.rb b/lib/clowne.rb
index 48cf4504..85ea46a4 100644
--- a/lib/clowne.rb
+++ b/lib/clowne.rb
@@ -9,11 +9,10 @@
 # Declarative models cloning
 module Clowne
   # List of built-in adapters
-  # rubocop:disable Layout/AlignHash
   ADAPTERS = {
-    base:          "Base",
+    base: "Base",
     active_record: "ActiveRecord",
-    sequel:        "Sequel",
+    sequel: "Sequel"
   }.freeze
   # rubocop:enable Layout/AlignHash
 
diff --git a/lib/clowne/adapters/active_record/associations.rb b/lib/clowne/adapters/active_record/associations.rb
index 8c2016bd..db851df6 100644
--- a/lib/clowne/adapters/active_record/associations.rb
+++ b/lib/clowne/adapters/active_record/associations.rb
@@ -15,7 +15,7 @@ module Associations
           belongs_to: BelongsTo,
           has_one: HasOne,
           has_many: HasMany,
-          has_and_belongs_to_many: HABTM,
+          has_and_belongs_to_many: HABTM
         }.freeze
 
         # Returns an association cloner class for reflection
diff --git a/lib/clowne/adapters/active_record/associations/belongs_to.rb b/lib/clowne/adapters/active_record/associations/belongs_to.rb
index c9aabb2f..735a84ec 100644
--- a/lib/clowne/adapters/active_record/associations/belongs_to.rb
+++ b/lib/clowne/adapters/active_record/associations/belongs_to.rb
@@ -5,7 +5,6 @@ module Adapters # :nodoc: all
     class ActiveRecord
       module Associations
         class BelongsTo < Base
-          # rubocop: disable Metrics/MethodLength
           def call(record)
             child = association
             return record unless child
diff --git a/lib/clowne/adapters/active_record/associations/has_one.rb b/lib/clowne/adapters/active_record/associations/has_one.rb
index 4741ab30..ff4abf89 100644
--- a/lib/clowne/adapters/active_record/associations/has_one.rb
+++ b/lib/clowne/adapters/active_record/associations/has_one.rb
@@ -5,7 +5,6 @@ module Adapters # :nodoc: all
     class ActiveRecord
       module Associations
         class HasOne < Base
-          # rubocop: disable Metrics/MethodLength
           def call(record)
             child = association
             return record unless child
diff --git a/lib/clowne/adapters/active_record/resolvers/association.rb b/lib/clowne/adapters/active_record/resolvers/association.rb
index 1a9f6aef..467db9fb 100644
--- a/lib/clowne/adapters/active_record/resolvers/association.rb
+++ b/lib/clowne/adapters/active_record/resolvers/association.rb
@@ -8,7 +8,6 @@ class UnknownAssociation < StandardError; end
 
         class Association
           class << self
-            # rubocop: disable Metrics/ParameterLists
             def call(source, record, declaration, adapter:, params:, **_options)
               reflection = source.class.reflections[declaration.name.to_s]
 
diff --git a/lib/clowne/adapters/sequel/associations.rb b/lib/clowne/adapters/sequel/associations.rb
index 122f16d2..17f7b083 100644
--- a/lib/clowne/adapters/sequel/associations.rb
+++ b/lib/clowne/adapters/sequel/associations.rb
@@ -13,7 +13,7 @@ module Associations
         SEQUEL_2_CLONER = {
           one_to_one: OneToOne,
           one_to_many: OneToMany,
-          many_to_many: ManyToMany,
+          many_to_many: ManyToMany
         }.freeze
 
         # Returns an association cloner class for reflection
diff --git a/lib/clowne/adapters/sequel/resolvers/association.rb b/lib/clowne/adapters/sequel/resolvers/association.rb
index ef79771e..1310bd03 100644
--- a/lib/clowne/adapters/sequel/resolvers/association.rb
+++ b/lib/clowne/adapters/sequel/resolvers/association.rb
@@ -6,7 +6,6 @@ class Sequel
       module Resolvers
         class Association
           class << self
-            # rubocop: disable Metrics/ParameterLists
             def call(source, record, declaration, adapter:, params:, **_options)
               with_clonable(source, record, declaration) do
                 reflection = source.class.association_reflections[declaration.name.to_sym]
diff --git a/lib/clowne/cloner.rb b/lib/clowne/cloner.rb
index bff1148e..08ab947e 100644
--- a/lib/clowne/cloner.rb
+++ b/lib/clowne/cloner.rb
@@ -8,6 +8,7 @@
 
 module Clowne # :nodoc: all
   class UnprocessableSourceError < StandardError; end
+
   class ConfigurationError < StandardError; end
 
   class Cloner
@@ -43,7 +44,6 @@ def register_trait(name, block)
         @traits[name].extend_with(block)
       end
 
-      # rubocop: disable Metrics/AbcSize, Metrics/MethodLength
       def call(object, **options, &block)
         raise(UnprocessableSourceError, "Nil is not cloneable object") if object.nil?
 
diff --git a/lib/clowne/declarations.rb b/lib/clowne/declarations.rb
index ccfa9eae..029aeff1 100644
--- a/lib/clowne/declarations.rb
+++ b/lib/clowne/declarations.rb
@@ -8,7 +8,7 @@ module Declarations # :nodoc:
     module_function
 
     def add(id, declaration = nil, &block)
-      declaration = block if block_given?
+      declaration = block if block
 
       if declaration.is_a?(Class)
         DSL.send(:define_method, id) do |*args, **hargs, &inner_block|
diff --git a/lib/clowne/declarations/trait.rb b/lib/clowne/declarations/trait.rb
index f7c07c3d..04c07b4c 100644
--- a/lib/clowne/declarations/trait.rb
+++ b/lib/clowne/declarations/trait.rb
@@ -17,7 +17,7 @@ def compiled
         @compiled = compile
       end
 
-      alias declarations compiled
+      alias_method :declarations, :compiled
 
       def dup
         self.class.new.tap do |duped|
diff --git a/lib/clowne/ext/yield_self_then.rb b/lib/clowne/ext/yield_self_then.rb
index 9b855aa8..57c40aa6 100644
--- a/lib/clowne/ext/yield_self_then.rb
+++ b/lib/clowne/ext/yield_self_then.rb
@@ -11,7 +11,7 @@ def yield_self
           end
         end
 
-        alias then yield_self
+        alias_method :then, :yield_self
       end
 
       # See https://github.com/jruby/jruby/issues/5220
diff --git a/lib/clowne/resolvers/init_as.rb b/lib/clowne/resolvers/init_as.rb
index eb21999c..4938823f 100644
--- a/lib/clowne/resolvers/init_as.rb
+++ b/lib/clowne/resolvers/init_as.rb
@@ -3,7 +3,6 @@
 module Clowne
   class Resolvers
     module InitAs # :nodoc: all
-      # rubocop: disable Metrics/ParameterLists
       def self.call(source, _record, declaration, params:, adapter:, **_options)
         adapter.init_record(declaration.block.call(source, **params))
       end
diff --git a/lib/clowne/rspec/clone_association.rb b/lib/clowne/rspec/clone_association.rb
index e946b2da..32c46eba 100644
--- a/lib/clowne/rspec/clone_association.rb
+++ b/lib/clowne/rspec/clone_association.rb
@@ -20,7 +20,6 @@ def initialize(name, options)
           extract_options! options
         end
 
-        # rubocop: disable Metrics/AbcSize
         def match(expected, _actual)
           @actual = plan.declarations
             .find { |key, decl| key == :association && decl.name == expected }
diff --git a/spec/clowne/adapters/base/association_spec.rb b/spec/clowne/adapters/base/association_spec.rb
index 5935951d..9d7d0ae3 100644
--- a/spec/clowne/adapters/base/association_spec.rb
+++ b/spec/clowne/adapters/base/association_spec.rb
@@ -71,7 +71,7 @@
       context "with record" do
         let(:custom_declaration_params) do
           {
-            params: ->(params, parent) { params.merge(some_stuff: "ಠᴗಠ", parent: parent) },
+            params: ->(params, parent) { params.merge(some_stuff: "ಠᴗಠ", parent: parent) }
           }
         end
 
diff --git a/spec/clowne/cloner_spec.rb b/spec/clowne/cloner_spec.rb
index dc54ce68..c3b2e4e8 100644
--- a/spec/clowne/cloner_spec.rb
+++ b/spec/clowne/cloner_spec.rb
@@ -33,21 +33,21 @@
   let(:expected_plan) do
     [
       [:association, Clowne::Declarations::IncludeAssociation, {
-        name: :comments, scope: nil, options: {},
-      },],
+        name: :comments, scope: nil, options: {}
+      }],
       [:association, Clowne::Declarations::IncludeAssociation, {
         name: :posts,
         scope: :some_scope,
-        options: {clone_with: "AnotherClonerClass"},
-      },],
+        options: {clone_with: "AnotherClonerClass"}
+      }],
       [:association, Clowne::Declarations::IncludeAssociation, {
         name: :tags,
         scope: nil,
-        options: {clone_with: "AnotherCloner2Class"},
-      },],
+        options: {clone_with: "AnotherCloner2Class"}
+      }],
       [:nullify, Clowne::Declarations::Nullify, {attributes: %i[title description]}],
       [:finalize, Clowne::Declarations::Finalize, {block: proc { 1 + 1 }}],
-      [:after_persist, Clowne::Declarations::AfterPersist, {block: proc { 2 + 2 }}],
+      [:after_persist, Clowne::Declarations::AfterPersist, {block: proc { 2 + 2 }}]
     ]
   end
 
@@ -67,19 +67,19 @@
         [:association, Clowne::Declarations::IncludeAssociation, {
           name: :posts,
           scope: :some_scope,
-          options: {clone_with: "AnotherClonerClass"},
-        },],
+          options: {clone_with: "AnotherClonerClass"}
+        }],
         [:association, Clowne::Declarations::IncludeAssociation, {
           name: :tags,
           scope: nil,
-          options: {clone_with: "AnotherCloner2Class"},
-        },],
+          options: {clone_with: "AnotherCloner2Class"}
+        }],
         [:association, Clowne::Declarations::IncludeAssociation, {
-          name: :brands, scope: nil, options: {},
-        },],
+          name: :brands, scope: nil, options: {}
+        }],
         [:nullify, Clowne::Declarations::Nullify, {attributes: %i[title description]}],
         [:finalize, Clowne::Declarations::Finalize, {block: proc { 1 + 1 }}],
-        [:after_persist, Clowne::Declarations::AfterPersist, {block: proc { 2 + 2 }}],
+        [:after_persist, Clowne::Declarations::AfterPersist, {block: proc { 2 + 2 }}]
       ]
     end
 
diff --git a/spec/clowne/integrations/adapter_lifecycle_spec.rb b/spec/clowne/integrations/adapter_lifecycle_spec.rb
index 3c6ff45e..6fa3743a 100644
--- a/spec/clowne/integrations/adapter_lifecycle_spec.rb
+++ b/spec/clowne/integrations/adapter_lifecycle_spec.rb
@@ -26,7 +26,6 @@ class PostCloner < Clowne::Cloner; end
   end
 
   shared_examples "pass adapter" do
-    # rubocop:disable Layout/MultilineMethodCallIndentation
     it "clones topic" do
       expect do
         operation.persist
diff --git a/spec/clowne/integrations/after_persist_spec.rb b/spec/clowne/integrations/after_persist_spec.rb
index fa9f9153..96efb139 100644
--- a/spec/clowne/integrations/after_persist_spec.rb
+++ b/spec/clowne/integrations/after_persist_spec.rb
@@ -50,7 +50,6 @@ class ImgCloner < Clowne::Cloner
       and we need to update the cloned topic with the cloned image' do
     subject(:operation) { AR::TopicCloner.call(topic) }
 
-    # rubocop:disable Layout/MultilineMethodCallIndentation
     it "clone and use cloned image" do
       expect do
         operation.persist
diff --git a/spec/clowne/planner_spec.rb b/spec/clowne/planner_spec.rb
index ca65683b..44379062 100644
--- a/spec/clowne/planner_spec.rb
+++ b/spec/clowne/planner_spec.rb
@@ -32,7 +32,7 @@
         is_expected.to match_declarations(
           [
             [:nullify, Clowne::Declarations::Nullify, {attributes: %i[foo bar]}],
-            [:nullify, Clowne::Declarations::Nullify, {attributes: %i[baz]}],
+            [:nullify, Clowne::Declarations::Nullify, {attributes: %i[baz]}]
           ]
         )
       end
@@ -54,7 +54,7 @@
           is_expected.to match_declarations(
             [
               [:nullify, Clowne::Declarations::Nullify, {attributes: %i[foo]}],
-              [:nullify, Clowne::Declarations::Nullify, {attributes: %i[bar]}],
+              [:nullify, Clowne::Declarations::Nullify, {attributes: %i[bar]}]
             ]
           )
         end
@@ -73,7 +73,7 @@
         is_expected.to match_declarations(
           [
             [:finalize, Clowne::Declarations::Finalize, {block: proc { 1 + 1 }}],
-            [:finalize, Clowne::Declarations::Finalize, {block: proc { 1 + 2 }}],
+            [:finalize, Clowne::Declarations::Finalize, {block: proc { 1 + 2 }}]
           ]
         )
       end
@@ -105,7 +105,7 @@
             [
               [:association, Clowne::Declarations::IncludeAssociation, {name: :users}],
               [:association, Clowne::Declarations::IncludeAssociation, {name: :posts}],
-              [:finalize, Clowne::Declarations::Finalize, {block: proc { 1 + 1 }}],
+              [:finalize, Clowne::Declarations::Finalize, {block: proc { 1 + 1 }}]
             ]
           )
         end
@@ -120,7 +120,7 @@
               [:association, Clowne::Declarations::IncludeAssociation, {name: :users}],
               [:association, Clowne::Declarations::IncludeAssociation, {name: :brands}],
               [:finalize, Clowne::Declarations::Finalize, {block: proc { 1 + 1 }}],
-              [:finalize, Clowne::Declarations::Finalize, {block: proc { 1 + 2 }}],
+              [:finalize, Clowne::Declarations::Finalize, {block: proc { 1 + 2 }}]
             ]
           )
         end
@@ -136,7 +136,7 @@
               [:association, Clowne::Declarations::IncludeAssociation, {name: :brands}],
               [:nullify, Clowne::Declarations::Nullify, {attributes: %i[extra data meta]}],
               [:finalize, Clowne::Declarations::Finalize, {block: proc { 1 + 1 }}],
-              [:finalize, Clowne::Declarations::Finalize, {block: proc { 1 + 2 }}],
+              [:finalize, Clowne::Declarations::Finalize, {block: proc { 1 + 2 }}]
             ]
           )
         end
@@ -166,7 +166,7 @@
               [:nullify, Clowne::Declarations::Nullify, {attributes: %i[extra data meta]}],
               [:nullify, Clowne::Declarations::Nullify, {attributes: %i[files_cache]}],
               [:finalize, Clowne::Declarations::Finalize, {block: proc { 1 + 1 }}],
-              [:finalize, Clowne::Declarations::Finalize, {block: proc { 1 + 2 }}],
+              [:finalize, Clowne::Declarations::Finalize, {block: proc { 1 + 2 }}]
             ]
           )
         end
diff --git a/spec/clowne/utils/params_spec.rb b/spec/clowne/utils/params_spec.rb
index cf382df7..06c74064 100644
--- a/spec/clowne/utils/params_spec.rb
+++ b/spec/clowne/utils/params_spec.rb
@@ -3,7 +3,7 @@
     let(:params) do
       {
         profile: {data: {name: "Robin"}},
-        rating: 10,
+        rating: 10
       }
     end
     let(:permitted_params) { subject.permit(params: params) }
diff --git a/spec/clowne/utils/plan_spec.rb b/spec/clowne/utils/plan_spec.rb
index 3b14da77..8cad872a 100644
--- a/spec/clowne/utils/plan_spec.rb
+++ b/spec/clowne/utils/plan_spec.rb
@@ -23,7 +23,7 @@
           [:a, "value_2"],
           [:b, "item_1"],
           [:b, "item_2"],
-          [:c, "scalar_1"],
+          [:c, "scalar_1"]
         ]
       )
 
@@ -37,7 +37,7 @@
           [:a, "value_2"],
           [:b, "item_1"],
           [:b, "item_2"],
-          [:c, "scalar_1"],
+          [:c, "scalar_1"]
         ]
       )
 
@@ -45,7 +45,7 @@
         [
           [:a, "value_2"],
           [:b, "item_1"],
-          [:b, "item_2"],
+          [:b, "item_2"]
         ]
       )
 
@@ -55,7 +55,7 @@
         [
           [:a, "value_2"],
           [:b, "item_1"],
-          [:b, "item_2"],
+          [:b, "item_2"]
         ]
       )
     end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 6c331025..e9d6ac21 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -12,14 +12,14 @@
 
 begin
   require "pry-byebug"
-rescue LoadError # rubocop:disable Lint/HandleExceptions
+rescue LoadError
 end
 
 %w[active_record sequel].each do |orm|
   require_relative "./support/#{orm}/initializer.rb"
 end
 
-Dir["#{File.dirname(__FILE__)}/support/**/*.rb"].each { |f| require f }
+Dir["#{File.dirname(__FILE__)}/support/**/*.rb"].sort.each { |f| require f }
 
 Clowne.default_adapter = :base
 
diff --git a/spec/support/active_record/initializer.rb b/spec/support/active_record/initializer.rb
index c5744ff6..0eb23604 100644
--- a/spec/support/active_record/initializer.rb
+++ b/spec/support/active_record/initializer.rb
@@ -3,5 +3,5 @@
 
 ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:")
 
-require_relative "./schema.rb"
-require_relative "./models.rb"
+require_relative "./schema"
+require_relative "./models"
diff --git a/spec/support/sequel/initializer.rb b/spec/support/sequel/initializer.rb
index 3c99e997..7a91d208 100644
--- a/spec/support/sequel/initializer.rb
+++ b/spec/support/sequel/initializer.rb
@@ -8,5 +8,5 @@
 
 SEQUEL_DB = Sequel.connect(db)
 
-require_relative "./schema.rb"
-require_relative "./models.rb"
+require_relative "./schema"
+require_relative "./models"