diff --git a/.rubocop.yml b/.rubocop.yml
index 168ee8a..9577cfd 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,6 +1,10 @@
 inherit_from:
   - https://raw.githubusercontent.com/gmcgibbon/dotfiles/main/rubocop.yml
 
+require:
+  - rubocop-rails
+  - rubocop-capybara
+
 AllCops:
   TargetRubyVersion: 3.3.0
   Exclude:
diff --git a/Gemfile b/Gemfile
index 725c7eb..50aa18e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -62,6 +62,7 @@ gem "blog", path: "blog"
 
 # Code linting
 gem "rubocop", require: false
+gem "rubocop-capybara"
 gem "rubocop-rails", require: false
 
 gem "tailwindcss-rails"
diff --git a/Gemfile.lock b/Gemfile.lock
index db3dc87..43b0cc7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -241,6 +241,8 @@ GEM
       unicode-display_width (>= 2.4.0, < 3.0)
     rubocop-ast (1.30.0)
       parser (>= 3.2.1.0)
+    rubocop-capybara (2.19.0)
+      rubocop (~> 1.41)
     rubocop-rails (2.12.4)
       activesupport (>= 4.2.0)
       rack (>= 1.1)
@@ -318,6 +320,7 @@ DEPENDENCIES
   rack-mini-profiler (~> 2.0)
   rails!
   rubocop
+  rubocop-capybara
   rubocop-rails
   selenium-webdriver (= 4.0.0.beta3)
   spring
diff --git a/app/components/application_page_component.rb b/app/components/application_page_component.rb
index 5ee101f..2e2e3e9 100644
--- a/app/components/application_page_component.rb
+++ b/app/components/application_page_component.rb
@@ -9,10 +9,10 @@ class ApplicationPageComponent < ApplicationComponent
 
   def favicon_meta_tags
     [
-      tag("link", rel: "icon", href: "/favicon.ico", sizes: "any"),
-      tag("link", rel: "icon", href: "/icon.svg", type: "image/svg+xml"),
-      tag("link", rel: "apple-touch-icon", href: "/apple-touch-icon.png", type: "image/svg+xml"),
-      tag("link", rel: "manifest", href: "/manifest.webmanifest")
-    ].join("\n").html_safe
+      tag.link(rel: "icon", href: "/favicon.ico", sizes: "any"),
+      tag.link(rel: "icon", href: "/icon.svg", type: "image/svg+xml"),
+      tag.link(rel: "apple-touch-icon", href: "/apple-touch-icon.png", type: "image/svg+xml"),
+      tag.link(rel: "manifest", href: "/manifest.webmanifest")
+    ].join("\n").html_safe # rubocop:disable Rails/OutputSafety
   end
 end
diff --git a/blog/lib/blog/document_renderer.rb b/blog/lib/blog/document_renderer.rb
index b263bc7..f1ee4eb 100644
--- a/blog/lib/blog/document_renderer.rb
+++ b/blog/lib/blog/document_renderer.rb
@@ -19,7 +19,7 @@ def render_erb(text, context:)
       end
 
       def render_md(text, context:) # rubocop:disable Lint/UnusedMethodArgument
-        markdown_parser.render(text).html_safe
+        markdown_parser.render(text).html_safe # rubocop:disable Rails/OutputSafety
       end
 
       def markdown_parser
diff --git a/blog/test/models/article_test.rb b/blog/test/models/article_test.rb
index 77454e4..7dff279 100644
--- a/blog/test/models/article_test.rb
+++ b/blog/test/models/article_test.rb
@@ -46,7 +46,7 @@ class ArticleTest < ActiveSupport::TestCase
     end
 
     test "#render_in" do
-      today = Date.today.strftime("%A")
+      today = Time.zone.today.strftime("%A")
 
       context = time_context(day: today)
 
diff --git a/config/environments/development.rb b/config/environments/development.rb
index d58f8e2..24fc277 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -18,7 +18,7 @@
 
   # 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/test/test_helper.rb b/test/test_helper.rb
index 3af3800..6c348c5 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -9,7 +9,7 @@ class TestCase
     # Run tests in parallel with specified workers
     parallelize(workers: :number_of_processors)
 
-    self.file_fixture_path = "#{Rails.root}/test/fixtures/files"
+    self.file_fixture_path = Rails.root.join("test/fixtures/files").to_s
 
     ApplicationRecord.base_path = Pathname.new(file_fixture_path)