diff --git a/.rubocop.yml b/.rubocop.yml
new file mode 100644
index 000000000..b07986d3f
--- /dev/null
+++ b/.rubocop.yml
@@ -0,0 +1,3 @@
+---
+inherit_gem:
+  rubocop-rails-omakase: rubocop.yml
diff --git a/Gemfile b/Gemfile
index c457ddcec..68b175f38 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,9 +5,9 @@ ruby "2.7.8"
 gem "active_link_to"
 gem "autoprefixer-rails"
 gem "bourbon", "7.3.0"
+gem "cancancan"
 gem "carrierwave", "~> 2.2.6"
 gem "carrierwave-base64"
-gem "cancancan"
 gem "config", "~> 2"
 gem "devise"
 gem "geocoder", "1.6.1"
@@ -25,8 +25,8 @@ gem "normalize-rails", "~> 4.1.1"
 gem "omniauth"
 gem "omniauth-github"
 gem "omniauth-google-oauth2"
-gem "omniauth-vkontakte"
 gem "omniauth-rails_csrf_protection"
+gem "omniauth-vkontakte"
 gem "pg"
 gem "phony_rails"
 gem "puma"
@@ -54,8 +54,8 @@ gem "stackprof", require: false, platform: :mri
 
 source "https://rails-assets.org" do
   gem "rails-assets-cropper", "~> 2.3"
-  gem "rails-assets-smartcrop", "~> 1.1"
   gem "rails-assets-listjs", "~> 1.5"
+  gem "rails-assets-smartcrop", "~> 1.1"
 end
 
 group :development do
@@ -65,25 +65,25 @@ end
 
 group :development, :test do
   gem "awesome_print"
+  gem "brakeman", require: false
   gem "bullet"
   gem "bundler-audit", ">= 0.5.0", require: false
-  gem "brakeman", require: false
   gem "dotenv-rails"
-  gem "faker"
   gem "factory_bot_rails"
+  gem "faker"
   gem "pry-byebug"
   gem "pry-rails"
   gem "rails-controller-testing"
   gem "rspec-rails"
-  gem "standard"
+  gem "rubocop-rails-omakase", require: false
 end
 
 group :test do
   gem "formulaic"
   gem "fuubar"
   gem "launchy"
-  gem "shoulda-matchers"
   gem "shoulda-callback-matchers"
+  gem "shoulda-matchers"
   gem "simplecov", require: false
   gem "timecop"
   gem "webmock"
diff --git a/Gemfile.lock b/Gemfile.lock
index c15b8f32c..04b753f9e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -73,7 +73,7 @@ GEM
       zeitwerk (~> 2.3)
     addressable (2.8.6)
       public_suffix (>= 2.0.2, < 6.0)
-    ast (2.4.0)
+    ast (2.4.2)
     autoprefixer-rails (9.6.1.1)
       execjs
     awesome_print (1.8.0)
@@ -93,13 +93,14 @@ GEM
       thor (~> 1.0)
     byebug (11.1.3)
     cancancan (3.5.0)
-    capybara (3.27.0)
+    capybara (3.39.2)
       addressable
+      matrix
       mini_mime (>= 0.1.3)
       nokogiri (~> 1.8)
       rack (>= 1.6.0)
       rack-test (>= 0.6.3)
-      regexp_parser (~> 1.5)
+      regexp_parser (>= 1.5, < 3.0)
       xpath (~> 3.2)
     carrierwave (2.2.6)
       activemodel (>= 5.0.0)
@@ -231,6 +232,7 @@ GEM
     json (2.7.2)
     jwt (2.8.1)
       base64
+    language_server-protocol (3.17.0.3)
     launchy (2.4.3)
       addressable (~> 2.3)
     listen (3.2.0)
@@ -245,6 +247,7 @@ GEM
       net-pop
       net-smtp
     marcel (1.0.4)
+    matrix (0.4.2)
     memoist (0.16.2)
     memory_profiler (0.9.14)
     meta-tags (2.20.0)
@@ -311,9 +314,10 @@ GEM
       omniauth-oauth2 (>= 1.5, <= 1.8.0)
     orm_adapter (0.5.0)
     os (1.0.1)
-    parallel (1.19.1)
-    parser (2.7.0.1)
-      ast (~> 2.4.0)
+    parallel (1.24.0)
+    parser (3.3.1.0)
+      ast (~> 2.4.1)
+      racc
     pg (1.5.6)
     phony (2.18.5)
     phony_rails (0.14.13)
@@ -379,7 +383,7 @@ GEM
       method_source
       rake (>= 12.2)
       thor (~> 1.0)
-    rainbow (3.0.0)
+    rainbow (3.1.1)
     rake (13.2.1)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
@@ -388,7 +392,7 @@ GEM
       mail
     redcarpet (3.5.1)
     redis (3.3.3)
-    regexp_parser (1.6.0)
+    regexp_parser (2.9.0)
     representable (3.0.4)
       declarative (< 0.1.0)
       declarative-option (< 0.2.0)
@@ -415,15 +419,33 @@ GEM
       rspec-mocks (~> 3.10)
       rspec-support (~> 3.10)
     rspec-support (3.13.1)
-    rubocop (0.83.0)
+    rubocop (1.63.3)
+      json (~> 2.3)
+      language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
-      parser (>= 2.7.0.1)
+      parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
-      rexml
+      regexp_parser (>= 1.8, < 3.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.31.1, < 2.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 1.4.0, < 2.0)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.31.2)
+      parser (>= 3.3.0.4)
+    rubocop-minitest (0.9.0)
+      rubocop (>= 0.74)
     rubocop-performance (1.5.2)
       rubocop (>= 0.71.0)
+    rubocop-rails (2.23.1)
+      activesupport (>= 4.2.0)
+      rack (>= 1.1)
+      rubocop (>= 1.33.0, < 2.0)
+      rubocop-ast (>= 1.30.0, < 2.0)
+    rubocop-rails-omakase (1.0.0)
+      rubocop
+      rubocop-minitest
+      rubocop-performance
+      rubocop-rails
     ruby-progressbar (1.10.1)
     ruby-vips (2.2.1)
       ffi (~> 1.12)
@@ -479,9 +501,6 @@ GEM
       sprockets (>= 3.0.0)
     ssrf_filter (1.1.2)
     stackprof (0.2.13)
-    standard (0.4.6)
-      rubocop (~> 0.83.0)
-      rubocop-performance (~> 1.5.2)
     temple (0.10.3)
     thor (1.3.1)
     tilt (2.3.0)
@@ -494,7 +513,7 @@ GEM
     uber (0.1.0)
     uglifier (4.2.0)
       execjs (>= 0.3.0, < 3)
-    unicode-display_width (1.6.0)
+    unicode-display_width (2.5.0)
     uniform_notifier (1.16.0)
     version_gem (1.1.4)
     warden (1.2.9)
@@ -577,6 +596,7 @@ DEPENDENCIES
   redis
   responders
   rspec-rails
+  rubocop-rails-omakase
   russian
   sass-rails (~> 6.0)
   shoulda-callback-matchers
@@ -585,7 +605,6 @@ DEPENDENCIES
   slim-rails
   sprockets (>= 3.0.0)
   stackprof
-  standard
   timecop
   toastr-rails
   uglifier
diff --git a/Rakefile b/Rakefile
index a855a0b7b..9df936133 100644
--- a/Rakefile
+++ b/Rakefile
@@ -5,7 +5,7 @@ require File.expand_path("../config/application", __FILE__)
 
 Rails.application.load_tasks
 task(:default).clear
-task default: [:spec]
+task default: [ :spec ]
 
 if defined? RSpec
   task(:spec).clear
diff --git a/app/controllers/admin/places_controller.rb b/app/controllers/admin/places_controller.rb
index b8828a402..ca9b4d438 100644
--- a/app/controllers/admin/places_controller.rb
+++ b/app/controllers/admin/places_controller.rb
@@ -21,7 +21,7 @@ def place_params
         :address,
         :title,
         :latitude,
-        :longitude,
+        :longitude
       ]
       params.require(:place).permit(*attributes)
     end
diff --git a/app/controllers/admin/users_controller.rb b/app/controllers/admin/users_controller.rb
index 847bf53fa..6a5f447c5 100644
--- a/app/controllers/admin/users_controller.rb
+++ b/app/controllers/admin/users_controller.rb
@@ -22,7 +22,7 @@ def user_params
         :first_name,
         :last_name,
         :phone,
-        :role,
+        :role
       ]
       params.require(:user).permit(*attributes)
     end
diff --git a/app/controllers/events/attendees_controller.rb b/app/controllers/events/attendees_controller.rb
index 7f4edc38b..d0f4d0ddc 100644
--- a/app/controllers/events/attendees_controller.rb
+++ b/app/controllers/events/attendees_controller.rb
@@ -1,6 +1,6 @@
 class Events::AttendeesController < ApplicationController
   respond_to :html
-  respond_to :csv, only: [:index]
+  respond_to :csv, only: [ :index ]
   load_and_authorize_resource :event
   authorize_resource class: false
   skip_authorize_resource only: :index
diff --git a/app/controllers/events_controller.rb b/app/controllers/events_controller.rb
index 0569d6bc7..6a7e39e5a 100644
--- a/app/controllers/events_controller.rb
+++ b/app/controllers/events_controller.rb
@@ -1,5 +1,5 @@
 class EventsController < ApplicationController
-  respond_to :json, only: [:create]
+  respond_to :json, only: [ :create ]
   respond_to :ics, only: :ics
   respond_to :rss, only: :feed
 
@@ -144,10 +144,10 @@ def whitelisted
         :title,
         :address,
         :latitude,
-        :longitude,
+        :longitude
       ],
       has_attendees_limit: [],
-      attendees_limit: [],
+      attendees_limit: []
     ]
   end
 end
diff --git a/app/controllers/places_controller.rb b/app/controllers/places_controller.rb
index ef89f4d84..1e775840e 100644
--- a/app/controllers/places_controller.rb
+++ b/app/controllers/places_controller.rb
@@ -17,9 +17,9 @@ def find
   def to_yandex_geoobject(place)
     {
       addressLine: place.address,
-      coordinates: [place.latitude, place.longitude],
+      coordinates: [ place.latitude, place.longitude ],
       place_title: place.title,
-      id: place.id,
+      id: place.id
     }
   end
 end
diff --git a/app/controllers/users/avatars_controller.rb b/app/controllers/users/avatars_controller.rb
index ae48073d5..940db6f31 100644
--- a/app/controllers/users/avatars_controller.rb
+++ b/app/controllers/users/avatars_controller.rb
@@ -1,7 +1,7 @@
 module Users
   class AvatarsController < ApplicationController
     before_action :authenticate_user!
-    before_action :set_user, only: [:create, :update, :destroy]
+    before_action :set_user, only: [ :create, :update, :destroy ]
     before_action :check_if_same_user_or_admin
 
     def create
diff --git a/app/controllers/users/profile_controller.rb b/app/controllers/users/profile_controller.rb
index d55325afd..4d7b6ecfc 100644
--- a/app/controllers/users/profile_controller.rb
+++ b/app/controllers/users/profile_controller.rb
@@ -1,9 +1,9 @@
 module Users
   class ProfileController < ApplicationController
-    before_action :authenticate_user!, except: [:sign_in]
-    before_action :set_user, only: [:profile, :settings, :settings_update, :edit]
+    before_action :authenticate_user!, except: [ :sign_in ]
+    before_action :set_user, only: [ :profile, :settings, :settings_update, :edit ]
 
-    authorize_resource class: User, except: [:sign_in, :sign_up_complete]
+    authorize_resource class: User, except: [ :sign_in, :sign_up_complete ]
 
     def sign_in; end
 
diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index a3437e593..cbbf58b01 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -1,5 +1,5 @@
 class UsersController < ApplicationController
-  before_action :authenticate_user!, only: [:edit, :destroy]
+  before_action :authenticate_user!, only: [ :edit, :destroy ]
 
   respond_to :html
   load_and_authorize_resource
@@ -57,7 +57,7 @@ def user_params
       :email,
       :phone,
       :hash_tag,
-      :bio,
+      :bio
     ]
 
     params.require(:user).permit(*user_attributes)
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 38c6235c4..492aa2385 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -1,10 +1,9 @@
 module ApplicationHelper
-
   def default_meta_image
     {
       _: asset_url("share.png"),
       width: 1200,
-      height: 630,
+      height: 630
     }
   end
 
@@ -22,15 +21,15 @@ def default_meta_tags
         url: root_url,
         locale: "ru_RU",
         type: "website",
-        image: default_meta_image,
+        image: default_meta_image
       },
       twitter: {
         image: asset_url("share.png"),
         card: "summary_large_image",
         site: "it_rostov",
         title: :title,
-        description: :description,
-      },
+        description: :description
+      }
     }
   end
 
diff --git a/app/helpers/events_helper.rb b/app/helpers/events_helper.rb
index 08d00f851..b2a27c919 100644
--- a/app/helpers/events_helper.rb
+++ b/app/helpers/events_helper.rb
@@ -4,11 +4,11 @@ def events_fit_on_one_page?(events)
   end
 
   def quoted_title(event)
-    ["&laquo;", event.title, "&raquo;"].join
+    [ "&laquo;", event.title, "&raquo;" ].join
   end
 
   def summary_info(event)
-    [quoted_title(event), event.place.full_address, l(event.started_at, format: :date_time_full)].compact.join("<br>")
+    [ quoted_title(event), event.place.full_address, l(event.started_at, format: :date_time_full) ].compact.join("<br>")
   end
 
   def make_global(link)
@@ -37,7 +37,7 @@ def remove_from_event_link(event)
   def to_yandex_location(place)
     {
       addressLine: place.full_address,
-      coordinates: [place.latitude, place.longitude],
+      coordinates: [ place.latitude, place.longitude ]
     }.to_json
   end
 end
diff --git a/app/helpers/user_helper.rb b/app/helpers/user_helper.rb
index e53a479f0..448cba052 100644
--- a/app/helpers/user_helper.rb
+++ b/app/helpers/user_helper.rb
@@ -13,26 +13,26 @@ def all_providers
         name: t("socials.facebook"),
         class: "fa fa-facebook",
         buttonclass: "btn btn-fb",
-        link: user_facebook_omniauth_authorize_path,
+        link: user_facebook_omniauth_authorize_path
       },
       google_oauth2: {
         name: t("socials.google_plus"),
         class: "fa fa-google-plus",
         buttonclass: "btn btn-google",
-        link: user_google_oauth2_omniauth_authorize_path,
+        link: user_google_oauth2_omniauth_authorize_path
       },
       vkontakte: {
         name: t("socials.vk"),
         class: "fa fa-vk",
         buttonclass: "btn btn-vk",
-        link: user_vkontakte_omniauth_authorize_path,
+        link: user_vkontakte_omniauth_authorize_path
       },
       github: {
         name: t("socials.github"),
         class: "fa fa-github",
         buttonclass: "btn btn-github",
-        link: user_github_omniauth_authorize_path,
-      },
+        link: user_github_omniauth_authorize_path
+      }
     }
   end
 
@@ -43,7 +43,7 @@ def provider_buttons_info(user)
       provider = a.provider.to_sym
       link = a.link
       button_class = all_providers[provider][:class]
-      res[provider] = [link, button_class] unless link.nil?
+      res[provider] = [ link, button_class ] unless link.nil?
     end
     res
   end
diff --git a/app/mailers/application_mailer.rb b/app/mailers/application_mailer.rb
index 002a2cef1..da65612e7 100644
--- a/app/mailers/application_mailer.rb
+++ b/app/mailers/application_mailer.rb
@@ -2,4 +2,3 @@ class ApplicationMailer < ActionMailer::Base
   default from: "no-reply@it61.info"
   layout "mailer"
 end
-
diff --git a/app/models/ability.rb b/app/models/ability.rb
index 443826603..490de4523 100644
--- a/app/models/ability.rb
+++ b/app/models/ability.rb
@@ -13,22 +13,22 @@ def initialize(user)
 
   def give_fresh_privileges(user, persisted_in_db)
     if persisted_in_db
-      can [:edit, :update, :destroy], user
+      can [ :edit, :update, :destroy ], user
     end
 
-    can [:read, :active, :recent], User
-    can [:read, :upcoming, :past, :ics], Event, published: true
+    can [ :read, :active, :recent ], User
+    can [ :read, :upcoming, :past, :ics ], Event, published: true
   end
 
   def give_mature_privileges(user, persisted_in_db)
     if persisted_in_db
-      can [:create], Event
-      can [:attend, :leave], Event, published: true
+      can [ :create ], Event
+      can [ :attend, :leave ], Event, published: true
       can :find, Place
-      can [:profile, :edit, :settings, :settings_update], User, id: user.id
-      can [:read, :edit, :update, :destroy], Event, organizer_id: user.id
-      can [:create, :destroy], :attendee
-      can [:index], attendee: { event: { organizer_id: user.id } }
+      can [ :profile, :edit, :settings, :settings_update ], User, id: user.id
+      can [ :read, :edit, :update, :destroy ], Event, organizer_id: user.id
+      can [ :create, :destroy ], :attendee
+      can [ :index ], attendee: { event: { organizer_id: user.id } }
     end
 
     if user.moderator?
diff --git a/app/models/event.rb b/app/models/event.rb
index f2d05633a..0b111d3bf 100644
--- a/app/models/event.rb
+++ b/app/models/event.rb
@@ -19,7 +19,7 @@ class Event < ActiveRecord::Base
   validates :organizer, presence: true
   validates :published_at, presence: true, if: :published?
   validates :started_at, presence: true
-  validates :has_attendees_limit, inclusion: { in: [true, false] }
+  validates :has_attendees_limit, inclusion: { in: [ true, false ] }
   validates :attendees_limit, presence: true, numericality: { greater_than_or_equal_to: -1 }
 
   delegate :title, :address, :latitude, :longitude, to: :place, prefix: true, allow_nil: true
@@ -93,15 +93,15 @@ def to_meta_tags
         url: Rails.application.routes.url_helpers.event_url(self, host: ENV["APPLICATION_HOST"]),
         locale: "ru_RU",
         type: "website",
-        image: cover.url,
+        image: cover.url
       },
       twitter: {
         image: cover.url,
         card: "summary_large_image",
         site: "it_rostov",
         title: :title,
-        description: :description,
-      },
+        description: :description
+      }
     }
   end
 
@@ -109,6 +109,6 @@ def to_meta_tags
 
   def permalink_title
     formatted_started_at = started_at.to_date.to_s if started_at.present?
-    [formatted_started_at, title].compact.join(" ")
+    [ formatted_started_at, title ].compact.join(" ")
   end
 end
diff --git a/app/models/group.rb b/app/models/group.rb
index 7bf18f4fe..71a43d76c 100644
--- a/app/models/group.rb
+++ b/app/models/group.rb
@@ -6,6 +6,6 @@ class Group < ApplicationRecord
   enum kind: {
     general: 0,
     developers: 1,
-    organizers: 2,
+    organizers: 2
   }
 end
diff --git a/app/models/place.rb b/app/models/place.rb
index c5e234919..bd2056065 100644
--- a/app/models/place.rb
+++ b/app/models/place.rb
@@ -5,6 +5,6 @@ class Place < ApplicationRecord
   validates :title, presence: true
 
   def full_address
-    [address, title].compact.reject(&:empty?).join(", ")
+    [ address, title ].compact.reject(&:empty?).join(", ")
   end
 end
diff --git a/app/models/user.rb b/app/models/user.rb
index b4123e57f..a2402bedd 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -8,12 +8,12 @@ class User < ApplicationRecord
   enum role: {
     member: 0,
     admin: 1,
-    moderator: 2,
+    moderator: 2
   }
 
   # Devise modules
   devise :rememberable, :trackable, :omniauthable,
-         omniauth_providers: [:github, :facebook, :google_oauth2, :vkontakte]
+         omniauth_providers: [ :github, :facebook, :google_oauth2, :vkontakte ]
 
   has_many :events_attendees, dependent: :destroy
   has_many :social_accounts, dependent: :destroy
@@ -74,10 +74,10 @@ def self.avatar_from_auth(auth)
   end
 
   def self.to_csv
-    attributes = %w{last_name first_name}
+    attributes = %w[last_name first_name]
 
     CSV.generate(headers: true) do |csv|
-      csv << ["Фамилия", "Имя", "Отметка"]
+      csv << [ "Фамилия", "Имя", "Отметка" ]
 
       all.each do |user|
         csv << attributes.map { |attr| user.send(attr) }
@@ -98,7 +98,7 @@ def display_name
   end
 
   def full_name
-    [first_name, last_name].compact.join(" ").presence || name
+    [ first_name, last_name ].compact.join(" ").presence || name
   end
 
   def remember_me
diff --git a/app/uploaders/image_uploader.rb b/app/uploaders/image_uploader.rb
index 3a4278d07..1dfb25b9f 100644
--- a/app/uploaders/image_uploader.rb
+++ b/app/uploaders/image_uploader.rb
@@ -30,17 +30,17 @@ def store_dir
 
   # Create different versions of your uploaded files:
   version :square_500 do
-    process resize_to_fit: [500, 500]
+    process resize_to_fit: [ 500, 500 ]
   end
 
   version :square_250 do
-    process resize_to_fit: [250, 250]
+    process resize_to_fit: [ 250, 250 ]
   end
 
   # Add a white list of extensions which are allowed to be uploaded.
   # For images you might use something like this:
   def extension_white_list
-    %w(jpg jpeg gif png)
+    %w[jpg jpeg gif png]
   end
 
   # Override the filename of the uploaded files:
diff --git a/config/application.rb b/config/application.rb
index f6bc69fe9..3ec0a4f72 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -17,13 +17,13 @@ class Application < Rails::Application
 
     config.app_generators.scaffold_controller :responders_controller
 
-    config.eager_load_paths += ["#{Rails.root}/lib"]
+    config.eager_load_paths += [ "#{Rails.root}/lib" ]
 
     config.exceptions_app = self.routes
 
     config.action_controller.action_on_unpermitted_parameters = :raise
 
-    config.i18n.available_locales = [:en, :ru]
+    config.i18n.available_locales = [ :en, :ru ]
     config.i18n.load_path += Dir["#{Rails.root}/config/locales/**/*.{rb,yml}"]
     config.i18n.default_locale = :ru
 
diff --git a/config/boot.rb b/config/boot.rb
index b9e460cef..988a5ddc4 100644
--- a/config/boot.rb
+++ b/config/boot.rb
@@ -1,4 +1,4 @@
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../Gemfile', __dir__)
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)
 
-require 'bundler/setup' # Set up gems listed in the Gemfile.
-require 'bootsnap/setup' # Speed up boot time by caching expensive operations.
+require "bundler/setup" # Set up gems listed in the Gemfile.
+require "bootsnap/setup" # Speed up boot time by caching expensive operations.
diff --git a/config/environment.rb b/config/environment.rb
index 426333bb4..cac531577 100644
--- a/config/environment.rb
+++ b/config/environment.rb
@@ -1,5 +1,5 @@
 # Load the Rails application.
-require_relative 'application'
+require_relative "application"
 
 # Initialize the Rails application.
 Rails.application.initialize!
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 3423a3312..b4a2aa2bc 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -14,7 +14,7 @@
 
   # Enable/disable caching. By default caching is disabled.
   # Run rails dev:cache to toggle caching.
-  if Rails.root.join('tmp', 'caching-dev.txt').exist?
+  if Rails.root.join("tmp", "caching-dev.txt").exist?
     config.action_controller.perform_caching = true
     config.action_controller.enable_fragment_cache_logging = true
 
diff --git a/config/environments/production.rb b/config/environments/production.rb
index cff85adf0..031242118 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -20,7 +20,7 @@
 
   # Disable serving static files from the `/public` folder by default since
   # Apache or NGINX already handles this.
-  config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?
+  config.public_file_server.enabled = ENV["RAILS_SERVE_STATIC_FILES"].present?
 
   # Compress CSS using a preprocessor.
   # config.assets.css_compressor = :sass
@@ -43,7 +43,7 @@
   config.log_level = :debug
 
   # Prepend all log lines with the following tags.
-  config.log_tags = [:request_id]
+  config.log_tags = [ :request_id ]
 
   # Use a different cache store in production.
   # config.cache_store = :mem_cache_store
diff --git a/config/environments/test.rb b/config/environments/test.rb
index 6c3223f4d..b4597a94e 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -16,7 +16,7 @@
   # Configure public file server for tests with Cache-Control for performance.
   config.public_file_server.enabled = true
   config.public_file_server.headers = {
-    'Cache-Control' => "public, max-age=#{1.hour.to_i}"
+    "Cache-Control" => "public, max-age=#{1.hour.to_i}"
   }
 
   # Show full error reports and disable caching.
diff --git a/config/initializers/devise.rb b/config/initializers/devise.rb
index b973f9c3c..c03c104e6 100644
--- a/config/initializers/devise.rb
+++ b/config/initializers/devise.rb
@@ -3,16 +3,16 @@
   config.mailer_sender = "no-reply@it61.info"
 
   require "devise/orm/active_record"
-  config.authentication_keys = [:email]
-  config.case_insensitive_keys = [:email]
-  config.strip_whitespace_keys = [:email]
-  config.skip_session_storage = [:http_auth]
+  config.authentication_keys = [ :email ]
+  config.case_insensitive_keys = [ :email ]
+  config.strip_whitespace_keys = [ :email ]
+  config.skip_session_storage = [ :http_auth ]
   config.stretches = Rails.env.test? ? 1 : 11
   config.reconfirmable = false
   config.expire_all_remember_me_on_sign_out = true
   config.password_length = 6..128
   config.email_regexp = /\A[^@\s]+@[^@\s]+\z/
-  config.reset_password_keys = [:email]
+  config.reset_password_keys = [ :email ]
   config.reset_password_within = 6.hours
   config.sign_out_via = :delete
 
diff --git a/config/initializers/filter_parameter_logging.rb b/config/initializers/filter_parameter_logging.rb
index 63f8779fc..fbc1a8eae 100644
--- a/config/initializers/filter_parameter_logging.rb
+++ b/config/initializers/filter_parameter_logging.rb
@@ -1,4 +1,4 @@
 # Be sure to restart your server when you modify this file.
 
 # Configure sensitive parameters which will be filtered from the log file.
-Rails.application.config.filter_parameters += [:password, :cover]
+Rails.application.config.filter_parameters += [ :password, :cover ]
diff --git a/config/initializers/rack_mini_profiler.rb b/config/initializers/rack_mini_profiler.rb
index 59acc02aa..8f83fa286 100644
--- a/config/initializers/rack_mini_profiler.rb
+++ b/config/initializers/rack_mini_profiler.rb
@@ -25,7 +25,7 @@
     /^\/uploads/,
     /^\/javascripts\//,
     /^\/images\//,
-    /^\/stylesheets\//,
+    /^\/stylesheets\//
   ]
 
   # we DO NOT WANT mini-profiler loading on anything but real desktops and laptops
diff --git a/config/initializers/wrap_parameters.rb b/config/initializers/wrap_parameters.rb
index bbfc3961b..6d55fe75d 100644
--- a/config/initializers/wrap_parameters.rb
+++ b/config/initializers/wrap_parameters.rb
@@ -5,7 +5,7 @@
 
 # Enable parameter wrapping for JSON. You can disable this by setting :format to an empty array.
 ActiveSupport.on_load(:action_controller) do
-  wrap_parameters format: [:json]
+  wrap_parameters format: [ :json ]
 end
 
 # To enable root element in JSON for ActiveRecord objects.
diff --git a/config/routes.rb b/config/routes.rb
index 913047c9f..325343821 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,6 +1,6 @@
 Rails.application.routes.draw do
   devise_for :users, controllers: {
-    omniauth_callbacks: "users/omniauth",
+    omniauth_callbacks: "users/omniauth"
   }
 
   devise_scope :user do
@@ -9,7 +9,7 @@
   end
 
   # Static pages
-  %w(welcome about).each do |page_name|
+  %w[welcome about].each do |page_name|
     get page_name, to: "pages##{page_name}"
   end
 
@@ -27,12 +27,12 @@
       get :active
       get :recent
     end
-    resource :avatars, only: [:create, :destroy], controller: "users/avatars"
+    resource :avatars, only: [ :create, :destroy ], controller: "users/avatars"
   end
 
   resources :events do
     scope module: :events do
-      resources :attendees, only: [:create, :destroy, :index]
+      resources :attendees, only: [ :create, :destroy, :index ]
     end
 
     collection do
@@ -48,11 +48,11 @@
     end
   end
 
-  resources :places, only: [:index] do
+  resources :places, only: [ :index ] do
     get :find, to: "places#find", on: :collection
   end
 
-  get :feed, to: "events#feed", defaults: { format: 'rss' }
+  get :feed, to: "events#feed", defaults: { format: "rss" }
 
   namespace :admin do
     root "users#index"
diff --git a/db/migrate/20160701095205_create_places.rb b/db/migrate/20160701095205_create_places.rb
index 8b6a02b86..4a8fa089a 100644
--- a/db/migrate/20160701095205_create_places.rb
+++ b/db/migrate/20160701095205_create_places.rb
@@ -8,6 +8,6 @@ def change
       t.timestamps null: false
     end
 
-    add_index :places, [:title, :address, :latitude, :longitude], unique: true
+    add_index :places, [ :title, :address, :latitude, :longitude ], unique: true
   end
 end
diff --git a/db/migrate/20160705080237_create_locations.rb b/db/migrate/20160705080237_create_locations.rb
index fd960aa53..2cccdd3ef 100644
--- a/db/migrate/20160705080237_create_locations.rb
+++ b/db/migrate/20160705080237_create_locations.rb
@@ -7,6 +7,6 @@ def change
       t.timestamps null: false
     end
 
-    add_index :locations, [:event_id, :place_id, :extra_info], unique: true
+    add_index :locations, [ :event_id, :place_id, :extra_info ], unique: true
   end
 end
diff --git a/db/migrate/20160714140818_add_indexes_to_participant_entry_forms.rb b/db/migrate/20160714140818_add_indexes_to_participant_entry_forms.rb
index dcb485096..b1190860b 100644
--- a/db/migrate/20160714140818_add_indexes_to_participant_entry_forms.rb
+++ b/db/migrate/20160714140818_add_indexes_to_participant_entry_forms.rb
@@ -2,6 +2,6 @@ class AddIndexesToParticipantEntryForms < ActiveRecord::Migration[5.0]
   def change
     remove_index :participant_entry_forms, :user_id
     remove_index :participant_entry_forms, :event_id
-    add_index :participant_entry_forms, [:user_id, :event_id], unique: true
+    add_index :participant_entry_forms, [ :user_id, :event_id ], unique: true
   end
 end
diff --git a/db/migrate/20170316154814_create_events_attendees.rb b/db/migrate/20170316154814_create_events_attendees.rb
index 91a104be4..95ee167bb 100644
--- a/db/migrate/20170316154814_create_events_attendees.rb
+++ b/db/migrate/20170316154814_create_events_attendees.rb
@@ -7,6 +7,6 @@ def change
       t.timestamps
     end
 
-    add_index :events_attendees, [:user_id, :event_id], unique: true
+    add_index :events_attendees, [ :user_id, :event_id ], unique: true
   end
 end
diff --git a/db/seeds.rb b/db/seeds.rb
index 74952f1df..46445b8c0 100644
--- a/db/seeds.rb
+++ b/db/seeds.rb
@@ -14,7 +14,7 @@
                 { title: 'Свободное пространство «Циферблат»', address: 'проспект Соколова, 46', latitude: 47.225872, longitude: 39.720466, created_at: '2016-08-26 09:13:41.476870', updated_at: '2016-08-26 09:13:41.476870' },
                 { title: 'DobroCowork University', address: 'улица 16-я Линия, 7В', latitude: 47.231355, longitude: 39.759354, created_at: '2016-08-26 09:14:22.045622', updated_at: '2016-08-26 09:14:22.045622' },
                 { title: 'AZIMUT Hotel Sochi 3*', address: 'Сочи, Континентальный проспект, 6', latitude: 43.402584, longitude: 39.973099, created_at: '2016-08-26 09:14:48.345412', updated_at: '2016-08-26 09:14:48.345412' },
-                { title: 'ДГТУ, Академия строительства и архитектуры', address: 'Социалистическая улица, 162/32', latitude: 47.223736, longitude: 39.732278, created_at: '2016-08-26 09:16:23.618108', updated_at: '2016-08-26 09:16:23.618108' },
+                { title: 'ДГТУ, Академия строительства и архитектуры', address: 'Социалистическая улица, 162/32', latitude: 47.223736, longitude: 39.732278, created_at: '2016-08-26 09:16:23.618108', updated_at: '2016-08-26 09:16:23.618108' }
               ])
 
 # Groups
@@ -47,5 +47,5 @@
                   published_at: 1.day.ago,
                   # TODO(vitallium): Move to fixtures?
                   cover: Rack::Test::UploadedFile.new(File.join(Rails.root, "spec", "support", "files", "event_title_image.jpg"))
-                },
+                }
               ])
diff --git a/lib/google_service.rb b/lib/google_service.rb
index 042062bf1..cd9c9864f 100644
--- a/lib/google_service.rb
+++ b/lib/google_service.rb
@@ -34,11 +34,11 @@ def self.to_google_calendar_obj(event)
       location: event.place.full_address,
       description: event.description? ? "" : event.description,
       start: {
-        dateTime: event.started_at.iso8601,
+        dateTime: event.started_at.iso8601
       },
       end: {
-        dateTime: event.started_at.iso8601,
-      },
+        dateTime: event.started_at.iso8601
+      }
     }
   end
 end
diff --git a/lib/ics_service.rb b/lib/ics_service.rb
index f7852c2ef..371e408ea 100644
--- a/lib/ics_service.rb
+++ b/lib/ics_service.rb
@@ -12,7 +12,7 @@ def to_ics_calendar(event)
         e.summary = event.title
         e.description = event.description
         e.location = place.full_address
-        e.geo = [place.latitude, place.longitude]
+        e.geo = [ place.latitude, place.longitude ]
       end
 
       calendar.publish
@@ -22,7 +22,7 @@ def to_ics_calendar(event)
     def file_options_for(event)
       {
         filename: filename(event),
-        type: ics_type,
+        type: ics_type
       }
     end
 
diff --git a/lib/permalink_for.rb b/lib/permalink_for.rb
index cd948788c..720d8400c 100644
--- a/lib/permalink_for.rb
+++ b/lib/permalink_for.rb
@@ -3,7 +3,7 @@ module PermalinkFor
 
   PERMALINK_TYPES = {
     slug: SlugImplementation,
-    pretty: PrettyImplementation,
+    pretty: PrettyImplementation
   }.freeze
 
   class_methods do
diff --git a/lib/permalink_for/pretty_implementation.rb b/lib/permalink_for/pretty_implementation.rb
index 55d8d98d9..e42cf258c 100644
--- a/lib/permalink_for/pretty_implementation.rb
+++ b/lib/permalink_for/pretty_implementation.rb
@@ -5,7 +5,7 @@ module PrettyImplementation
     def to_param
       return id if new_record?
       target_field_value = send(permalink_configuration[:target_field])
-      arr = [I18n.transliterate(target_field_value).parameterize, id]
+      arr = [ I18n.transliterate(target_field_value).parameterize, id ]
       arr.delete("")
       arr.join("-")
     end
diff --git a/lib/permalink_for/slug_implementation.rb b/lib/permalink_for/slug_implementation.rb
index aec83372b..658b1d132 100644
--- a/lib/permalink_for/slug_implementation.rb
+++ b/lib/permalink_for/slug_implementation.rb
@@ -8,7 +8,7 @@ def permalink_validation_opts
         {
           presence: true,
           uniqueness: true,
-          format: { with: /\A[a-z0-9_-]+\Z/ },
+          format: { with: /\A[a-z0-9_-]+\Z/ }
         }
       end
     end
diff --git a/lib/tasks/bundler_audit.rake b/lib/tasks/bundler_audit.rake
index 00c12637d..66171c0d9 100644
--- a/lib/tasks/bundler_audit.rake
+++ b/lib/tasks/bundler_audit.rake
@@ -4,8 +4,8 @@ if Rails.env.development? || Rails.env.test?
   namespace :bundler do
     desc "Updates the ruby-advisory-db and runs audit"
     task :audit do
-      %w(update check).each do |command|
-        Bundler::Audit::CLI.start [command]
+      %w[update check].each do |command|
+        Bundler::Audit::CLI.start [ command ]
       end
     end
   end
diff --git a/lib/tasks/dev.rake b/lib/tasks/dev.rake
index d1eb848af..aca5e5aed 100644
--- a/lib/tasks/dev.rake
+++ b/lib/tasks/dev.rake
@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 if Rails.env.development? || Rails.env.test?
   require "factory_bot"
 
diff --git a/lib/tasks/developers.rake b/lib/tasks/developers.rake
index 984d8b60c..9f0b6d909 100644
--- a/lib/tasks/developers.rake
+++ b/lib/tasks/developers.rake
@@ -2,7 +2,7 @@ namespace :db do
   require File.dirname(__FILE__) + "/importer/importer"
 
   desc "Assigns developers to Developer group, usage: rake db:seed:users['data_file']"
-  task :users, [:data_file] => :environment do |_t, args|
+  task :users, [ :data_file ] => :environment do |_t, args|
     if args.data_file.blank? || !File.exist?(args.data_file)
       raise "Data file can't be empty"
     end
diff --git a/lib/tasks/importer/events_importer.rb b/lib/tasks/importer/events_importer.rb
index 7f8531454..559791c27 100644
--- a/lib/tasks/importer/events_importer.rb
+++ b/lib/tasks/importer/events_importer.rb
@@ -3,13 +3,13 @@ module EventsImporter
 
   FIELDS_TO_SKIP = [
     "published_to_google_calendar",
-    "google_calendar_id",
+    "google_calendar_id"
   ].freeze
 
   PREDEFINED_PLACES = [
     { key: "Южный IT-парк", id: 3 },
     { key: "MESTO", id: 2 },
-    { key: "Место", id: 2 },
+    { key: "Место", id: 2 }
   ]
 
   def import_events
diff --git a/lib/tasks/importer/importer.rb b/lib/tasks/importer/importer.rb
index d4aef209c..3d06354e4 100644
--- a/lib/tasks/importer/importer.rb
+++ b/lib/tasks/importer/importer.rb
@@ -10,7 +10,7 @@ class Importer
     { table: "users", reset: true },
     { table: "social_accounts", reset: true },
     { table: "events", reset: true },
-    { table: "events_attendees", reset: true },
+    { table: "events_attendees", reset: true }
   ].freeze
 
   def initialize(old_db, new_db)
diff --git a/lib/tasks/transition_data.rake b/lib/tasks/transition_data.rake
index 12a518e98..f6ff796b5 100644
--- a/lib/tasks/transition_data.rake
+++ b/lib/tasks/transition_data.rake
@@ -2,7 +2,7 @@ namespace :db do
   require_relative "./importer/importer"
 
   desc "Transition data from old database, usage: rake db:transition['old_db_name']"
-  task :transition, [:old_database] => :environment do |_t, args|
+  task :transition, [ :old_database ] => :environment do |_t, args|
     args.with_defaults(old_database: "it61_old")
 
     old_db = args.old_database.to_sym
diff --git a/spec/controllers/errors_controller_spec.rb b/spec/controllers/errors_controller_spec.rb
index 34b9b5edf..99630bdf3 100644
--- a/spec/controllers/errors_controller_spec.rb
+++ b/spec/controllers/errors_controller_spec.rb
@@ -1,5 +1,4 @@
 require 'rails_helper'
 
 RSpec.describe ErrorsController, type: :controller do
-
 end
diff --git a/spec/controllers/events_controller_spec.rb b/spec/controllers/events_controller_spec.rb
index 3c3adea14..245d3c176 100644
--- a/spec/controllers/events_controller_spec.rb
+++ b/spec/controllers/events_controller_spec.rb
@@ -107,7 +107,7 @@
 
         expect(response.status).to eq(200)
         expect(response).to render_template(:index)
-        expect(assigns(:events)).to eq([event])
+        expect(assigns(:events)).to eq([ event ])
       end
     end
 
diff --git a/spec/factories/users.rb b/spec/factories/users.rb
index 159d1da7a..bb225ff09 100644
--- a/spec/factories/users.rb
+++ b/spec/factories/users.rb
@@ -1,5 +1,5 @@
 FactoryBot.define do
-  factory :user, aliases: [:organizer] do
+  factory :user, aliases: [ :organizer ] do
     email { Faker::Internet.email }
     first_name { Faker::Name.first_name }
     last_name { Faker::Name.last_name }
diff --git a/spec/models/social_account_spec.rb b/spec/models/social_account_spec.rb
index 433ce7d68..bb564d210 100644
--- a/spec/models/social_account_spec.rb
+++ b/spec/models/social_account_spec.rb
@@ -1,9 +1,7 @@
 RSpec.describe SocialAccount, type: :model do
-
   describe "public class methods" do
     context "responds to its methods" do
       it { expect(SocialAccount).to respond_to(:link_for) }
     end
   end
-
 end
diff --git a/spec/models/user_spec.rb b/spec/models/user_spec.rb
index d1c6f6c1c..9a1af422b 100644
--- a/spec/models/user_spec.rb
+++ b/spec/models/user_spec.rb
@@ -72,21 +72,21 @@
       it { should have_abilities(:upcoming, Event) }
       it { should have_abilities(:past, Event) }
 
-      it { should_not have_abilities([:edit, :update, :destroy], user) }
-      it { should_not have_abilities([:edit, :update, :destroy], event) }
-      it { should_not have_abilities([:edit, :update, :destroy], published_event) }
-      it { should_not have_abilities([:read], event) }
+      it { should_not have_abilities([ :edit, :update, :destroy ], user) }
+      it { should_not have_abilities([ :edit, :update, :destroy ], event) }
+      it { should_not have_abilities([ :edit, :update, :destroy ], published_event) }
+      it { should_not have_abilities([ :read ], event) }
     end
 
     context "when is an authorized user" do
       let! (:user) { create(:user) }
       it { should have_abilities(:read, User.new) }
       # manage himself
-      it { should have_abilities([:edit, :update, :destroy], user) }
-      it { should have_abilities([:attend, :leave], published_event) }
+      it { should have_abilities([ :edit, :update, :destroy ], user) }
+      it { should have_abilities([ :attend, :leave ], published_event) }
 
-      it { should_not have_abilities([:read, :edit, :update, :destroy], event) }
-      it { should_not have_abilities([:attend, :leave], event) }
+      it { should_not have_abilities([ :read, :edit, :update, :destroy ], event) }
+      it { should_not have_abilities([ :attend, :leave ], event) }
     end
 
     context "when is a moderator" do
@@ -110,7 +110,7 @@
       let!(:user) { create(:user) }
       let!(:event) { create(:event, organizer: user) }
 
-      it { should have_abilities([:read, :edit, :update, :destroy], event) }
+      it { should have_abilities([ :read, :edit, :update, :destroy ], event) }
 
       it { should_not have_abilities(:publish, event) }
     end
@@ -124,20 +124,19 @@
     context 'with the connected GitHub social account' do
       let!(:github_account) { create(:social_account, :github, user: user) }
 
-      it { is_expected.to eq([github_account]) }
+      it { is_expected.to eq([ github_account ]) }
     end
   end
 
   describe ".unlinked_social_providers" do
     subject(:unlinked_social_providers) { user.unlinked_social_providers }
 
-    it { is_expected.to eq(["github", "vkontakte", "google_oauth2"]) }
+    it { is_expected.to eq([ "github", "vkontakte", "google_oauth2" ]) }
 
     context 'with the connected GitHub social account' do
       let!(:github_account) { create(:social_account, user: user) }
 
-      it { is_expected.to eq(["github", "google_oauth2"]) }
+      it { is_expected.to eq([ "github", "google_oauth2" ]) }
     end
   end
-
 end
diff --git a/spec/support/cancan_matchers.rb b/spec/support/cancan_matchers.rb
index 2c11083af..fa6665df8 100644
--- a/spec/support/cancan_matchers.rb
+++ b/spec/support/cancan_matchers.rb
@@ -30,14 +30,14 @@
 
   description do
     obj_name = @obj.class.name
-    obj_name = @obj.to_s.capitalize if [Class, Module, Symbol].
+    obj_name = @obj.to_s.capitalize if [ Class, Module, Symbol ].
                                        include?(@obj.class)
     "have abilities #{@expected_hash.keys.join(', ')} on #{obj_name}"
   end
 
   failure_message do
     obj_name = @obj.class.name
-    obj_name = @obj.to_s.capitalize if [Class, Module, Symbol].
+    obj_name = @obj.to_s.capitalize if [ Class, Module, Symbol ].
                                        include?(@obj.class)
     "expected user to have abilities: #{@expected_hash} for " \
       "#{obj_name}, but got #{@actual_hash}"
@@ -64,7 +64,7 @@
 
   description do
     obj_name = @obj.class.name
-    obj_name = @obj.to_s.capitalize if [Class, Module, Symbol].
+    obj_name = @obj.to_s.capitalize if [ Class, Module, Symbol ].
                                        include?(@obj.class)
     "not have abilities #{@expected_hash.keys.join(', ')} " \
       "on #{obj_name}" if @expected_hash.present?
@@ -72,7 +72,7 @@
 
   failure_message do
     obj_name = @obj.class.name
-    obj_name = @obj.to_s.capitalize if [Class, Module, Symbol].
+    obj_name = @obj.to_s.capitalize if [ Class, Module, Symbol ].
                                        include?(@obj.class)
     "expected user NOT to have abilities #{@expected_hash.keys.join(', ')} " \
         "for #{obj_name}, but got #{@actual_hash}"