diff --git a/Gemfile b/Gemfile
index 282346044..ea3f89286 100644
--- a/Gemfile
+++ b/Gemfile
@@ -147,7 +147,7 @@ group :development, :test do
   gem "knapsack_pro", "~> 3.0.0" # Help parallelize Ruby spec builds
   gem "pry-byebug", "~> 3.8" # Combine 'pry' with 'byebug'. Adds 'step', 'next', 'finish', 'continue' and 'break' commands to control execution
   gem "rspec-rails", "~> 5.0" # rspec-rails is a testing framework for Rails 3+
-  gem "rubocop", "~> 1.18", require: false # Automatic Ruby code style checking tool
+  gem "rubocop", "~> 1.19", require: false # Automatic Ruby code style checking tool
   gem "rubocop-performance", "~> 1.11", require: false # A collection of RuboCop cops to check for performance optimizations in Ruby code
   gem "rubocop-rails", "~> 2.11", require: false # Automatic Rails code style checking tool
   gem "rubocop-rspec", "~> 2.4", require: false # Code style checking for RSpec files
diff --git a/Gemfile.lock b/Gemfile.lock
index e2db43ca4..f729917ca 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -650,16 +650,16 @@ GEM
     rspec-retry (0.6.2)
       rspec-core (> 3.3)
     rspec-support (3.10.2)
-    rubocop (1.18.4)
+    rubocop (1.19.0)
       parallel (~> 1.10)
       parser (>= 3.0.0.0)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
       rexml
-      rubocop-ast (>= 1.8.0, < 2.0)
+      rubocop-ast (>= 1.9.1, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.8.0)
+    rubocop-ast (1.10.0)
       parser (>= 3.0.1.1)
     rubocop-performance (1.11.4)
       rubocop (>= 1.7.0, < 2.0)
@@ -956,7 +956,7 @@ DEPENDENCIES
   rpush-redis (~> 1.1)
   rspec-rails (~> 5.0)
   rspec-retry (~> 0.6)
-  rubocop (~> 1.18)
+  rubocop (~> 1.19)
   rubocop-performance (~> 1.11)
   rubocop-rails (~> 2.11)
   rubocop-rspec (~> 2.4)
diff --git a/app/controllers/concerns/valid_request.rb b/app/controllers/concerns/valid_request.rb
index b1a6d414f..56f44aaee 100644
--- a/app/controllers/concerns/valid_request.rb
+++ b/app/controllers/concerns/valid_request.rb
@@ -22,7 +22,7 @@ module ValidRequest
     end
   end
 
-  def _compute_redirect_to_location(request, options) #:nodoc:
+  def _compute_redirect_to_location(request, options) # :nodoc:
     case options
     # Yet another monkeypatch required to send proper protocol out.
     # In this case we make sure the redirect ends in the app protocol.
diff --git a/app/liquid_tags/github_tag/github_readme_tag.rb b/app/liquid_tags/github_tag/github_readme_tag.rb
index 83a185d77..1ab957a7f 100644
--- a/app/liquid_tags/github_tag/github_readme_tag.rb
+++ b/app/liquid_tags/github_tag/github_readme_tag.rb
@@ -60,7 +60,6 @@ class GithubTag
 
     def fetch_readme(repository_path, repository_url)
       readme_html = Github::OauthClient.new.readme(repository_path, accept: "application/vnd.github.html")
-      readme = Github::OauthClient.new.readme(repository_path)
       clean_relative_path!(readme_html, repository_url)
     rescue Github::Errors::NotFound
       nil
diff --git a/app/models/tweet.rb b/app/models/tweet.rb
index 2966dd5f3..f625f289f 100644
--- a/app/models/tweet.rb
+++ b/app/models/tweet.rb
@@ -59,7 +59,7 @@ class Tweet < ApplicationRecord
       status = if status.retweeted_status.present?
                  TwitterClient::Client.status(status.retweeted_status.id.to_s)
                else
-                 status
+                 status # rubocop:disable Style/RedundantSelfAssignmentBranch
                end
 
       params = { twitter_id_code: status.id.to_s }
diff --git a/app/services/notifications/new_follower/send.rb b/app/services/notifications/new_follower/send.rb
index 3df1bbb49..929a30ce4 100644
--- a/app/services/notifications/new_follower/send.rb
+++ b/app/services/notifications/new_follower/send.rb
@@ -10,7 +10,7 @@ module Notifications
         # we explicitly symbolize_keys because FollowData.new will fail otherwise with an error of
         # ":followable_id is missing in Hash input". FollowData expects a symbol, not a string.
         follow_data.symbolize_keys!
-        follow_data = follow_data.is_a?(FollowData) ? follow_data : FollowData.new(follow_data)
+        follow_data = FollowData.new(follow_data) unless follow_data.is_a?(FollowData)
         @followable_id = follow_data.followable_id # fetch(:followable_id)
         @followable_type = follow_data.followable_type # fetch(:followable_type)
         @follower_id = follow_data.follower_id # fetch(:follower_id)
diff --git a/app/uploaders/base_uploader.rb b/app/uploaders/base_uploader.rb
index 9f755afe0..52e2e7674 100644
--- a/app/uploaders/base_uploader.rb
+++ b/app/uploaders/base_uploader.rb
@@ -2,6 +2,7 @@ class BaseUploader < CarrierWave::Uploader::Base
   include CarrierWave::BombShelter # limits size to 4096x4096
   include CarrierWave::MiniMagick # adds processing operations
 
+  EXTENSION_ALLOWLIST = %w[jpg jpeg jpe gif png ico bmp dng].freeze
   FRAME_MAX = 500
   FRAME_STRIP_MAX = 150
 
@@ -14,11 +15,11 @@ class BaseUploader < CarrierWave::Uploader::Base
   end
 
   def extension_allowlist
-    %w[jpg jpeg jpe gif png ico bmp dng]
+    EXTENSION_ALLOWLIST
   end
 
   def size_range
-    1..25.megabytes
+    1..(25.megabytes)
   end
 
   protected
diff --git a/app/uploaders/profile_image_uploader.rb b/app/uploaders/profile_image_uploader.rb
index 84ccb0a67..b958fee38 100644
--- a/app/uploaders/profile_image_uploader.rb
+++ b/app/uploaders/profile_image_uploader.rb
@@ -4,7 +4,7 @@ class ProfileImageUploader < BaseUploader
   end
 
   def size_range
-    1..2.megabytes
+    1..(2.megabytes)
   end
 
   protected
diff --git a/lib/generators/settings_model/settings_model_generator.rb b/lib/generators/settings_model/settings_model_generator.rb
index 2bc11abb9..6fc70c111 100644
--- a/lib/generators/settings_model/settings_model_generator.rb
+++ b/lib/generators/settings_model/settings_model_generator.rb
@@ -12,7 +12,7 @@ class SettingsModelGenerator < Rails::Generators::NamedBase
 
   @migrations = false
 
-  def self.next_migration_number(dirname) #:nodoc:
+  def self.next_migration_number(dirname) # :nodoc:
     if ActiveRecord::Base.timestamped_migrations
       if @migrations
         (current_migration_number(dirname) + 1)
diff --git a/spec/models/profile_spec.rb b/spec/models/profile_spec.rb
index 503509b98..3b481f2f3 100644
--- a/spec/models/profile_spec.rb
+++ b/spec/models/profile_spec.rb
@@ -63,6 +63,7 @@ RSpec.describe Profile, type: :model do
         profile.website_url = nil
         expect(profile).to be_valid
       end
+
       it "is valid with a complete url" do
         profile.website_url = "https://dev.to"
         expect(profile).to be_valid
diff --git a/spec/requests/stories/tagged_articles_spec.rb b/spec/requests/stories/tagged_articles_spec.rb
index 3b928348a..d004af860 100644
--- a/spec/requests/stories/tagged_articles_spec.rb
+++ b/spec/requests/stories/tagged_articles_spec.rb
@@ -1,5 +1,6 @@
 require "rails_helper"
 
+# rubocop:disable RSpec/NestedGroups
 RSpec.describe "Stories::TaggedArticlesIndex", type: :request do
   %i[enable disable].each do |method|
     context "when :optimize_article_tag_query is #{method}d" do
@@ -92,7 +93,8 @@ RSpec.describe "Stories::TaggedArticlesIndex", type: :request do
         it "shows meta keywords if set" do
           allow(Settings::General).to receive(:meta_keywords).and_return({ tag: "software engineering, ruby" })
           get "/t/#{tag.name}"
-          expect(response.body).to include("<meta name=\"keywords\" content=\"software engineering, ruby, #{tag.name}\">")
+          expect(response.body)
+            .to include("<meta name=\"keywords\" content=\"software engineering, ruby, #{tag.name}\">")
         end
 
         it "does not show meta keywords if not set" do
@@ -223,3 +225,4 @@ RSpec.describe "Stories::TaggedArticlesIndex", type: :request do
     end
   end
 end
+# rubocop:enable RSpec/NestedGroups
diff --git a/vendor/cache/rubocop-1.18.4.gem b/vendor/cache/rubocop-1.18.4.gem
deleted file mode 100644
index 0c54b46c1..000000000
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diff --git a/vendor/cache/rubocop-1.19.0.gem b/vendor/cache/rubocop-1.19.0.gem
new file mode 100644
index 000000000..c16c10578
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diff --git a/vendor/cache/rubocop-ast-1.10.0.gem b/vendor/cache/rubocop-ast-1.10.0.gem
new file mode 100644
index 000000000..fa59da07a
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diff --git a/vendor/cache/rubocop-ast-1.8.0.gem b/vendor/cache/rubocop-ast-1.8.0.gem
deleted file mode 100644
index 6373022ca..000000000
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