diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index ba87dd8713a..118c0c326ce 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -23,16 +23,6 @@ Style/HashSyntax:
     - 'app/controllers/api/session_controller.rb'
     - 'app/controllers/api/watches/toggle_controller.rb'
     - 'app/controllers/application_controller.rb'
-    - 'app/controllers/notifications/read_by_category_controller.rb'
-    - 'app/controllers/notifications_controller.rb'
-    - 'app/controllers/products_controller.rb'
-    - 'app/controllers/user_sessions_controller.rb'
-    - 'app/helpers/meta_tags_helper.rb'
-    - 'app/helpers/page_tab_helper.rb'
-    - 'app/helpers/reactions_helper.rb'
-    - 'app/jobs/ai_answer_create_job.rb'
-    - 'app/mailers/activity_mailer.rb'
-    - 'app/mailers/notification_mailer.rb'
     - 'app/models/announcement_notifier.rb'
     - 'app/models/answer.rb'
     - 'app/models/answer_notifier.rb'
diff --git a/app/controllers/notifications/read_by_category_controller.rb b/app/controllers/notifications/read_by_category_controller.rb
index def995e9592..9f8c5280c95 100644
--- a/app/controllers/notifications/read_by_category_controller.rb
+++ b/app/controllers/notifications/read_by_category_controller.rb
@@ -7,6 +7,6 @@ def create
     target = params[:target].presence&.to_sym
     notifications = current_user.notifications.by_target(target).unreads
     current_user.mark_all_as_read_and_delete_cache_of_unreads(target_notifications: notifications)
-    redirect_to notifications_path(target: target), notice: '既読にしました'
+    redirect_to notifications_path(target:), notice: '既読にしました'
   end
 end
diff --git a/app/controllers/notifications_controller.rb b/app/controllers/notifications_controller.rb
index 011270e45e4..823b08fde2b 100644
--- a/app/controllers/notifications_controller.rb
+++ b/app/controllers/notifications_controller.rb
@@ -9,7 +9,7 @@ def index
 
   def show
     link = @notification.read_attribute :link
-    @notifications = current_user.notifications.where(link: link)
+    @notifications = current_user.notifications.where(link:)
     current_user.mark_all_as_read_and_delete_cache_of_unreads(target_notifications: @notifications)
     redirect_to link
   end
diff --git a/app/controllers/products_controller.rb b/app/controllers/products_controller.rb
index aec239e73b4..8507f9f4290 100644
--- a/app/controllers/products_controller.rb
+++ b/app/controllers/products_controller.rb
@@ -55,7 +55,7 @@ def update
     set_wip
     update_published_at
     if @product.update(product_params)
-      Newspaper.publish(:product_update, { product: @product, current_user: current_user })
+      Newspaper.publish(:product_update, { product: @product, current_user: })
       Newspaper.publish(:product_save, { product: @product })
       notice_another_mentor_assigned_as_checker
       redirect_to Redirection.determin_url(self, @product), notice: notice_message(@product, :update)
diff --git a/app/controllers/user_sessions_controller.rb b/app/controllers/user_sessions_controller.rb
index b29787e7123..3b408ccc193 100644
--- a/app/controllers/user_sessions_controller.rb
+++ b/app/controllers/user_sessions_controller.rb
@@ -40,7 +40,7 @@ def callback
     auth = request.env['omniauth.auth']
     github_id = auth[:uid]
     if current_user.blank?
-      user = User.find_by(github_id: github_id)
+      user = User.find_by(github_id:)
       if user.blank?
         flash[:alert] = 'ログインに失敗しました。先にアカウントを作成後、GitHub連携を行ってください。'
         redirect_to root_url
diff --git a/app/helpers/meta_tags_helper.rb b/app/helpers/meta_tags_helper.rb
index b8c5415b52f..2c67c7f2bcf 100644
--- a/app/helpers/meta_tags_helper.rb
+++ b/app/helpers/meta_tags_helper.rb
@@ -30,7 +30,7 @@ def default_meta_tags
 
   def welcome_meta_tags
     default_meta_tags.deep_merge({
-                                   title: title,
+                                   title:,
                                    description: '月額29,800円、全機能が使えるお試し期間付き。フィヨルドブートキャンプは現場の即戦力になるためのスキルとプログラミングの楽しさを伝える、現役エンジニアが考える理想のプログラミングスクールの実現に励んでいます。',
                                    og: {
                                      title: title || 'FJORD BOOT CAMP（フィヨルドブートキャンプ）',
diff --git a/app/helpers/page_tab_helper.rb b/app/helpers/page_tab_helper.rb
index 426c5e42b2d..f2d28b6e67b 100644
--- a/app/helpers/page_tab_helper.rb
+++ b/app/helpers/page_tab_helper.rb
@@ -36,10 +36,10 @@ def root_tab(resource)
 
   def page_tab_member(path, tab_name, is_products_tab: false)
     {
-      path: path,
+      path:,
       target_name: tab_name.to_s,
       display_name: display_tab_name(tab_name),
-      is_products_tab: is_products_tab
+      is_products_tab:
     }
   end
 
diff --git a/app/helpers/reactions_helper.rb b/app/helpers/reactions_helper.rb
index 509d5454157..e3fd75bec6d 100644
--- a/app/helpers/reactions_helper.rb
+++ b/app/helpers/reactions_helper.rb
@@ -13,7 +13,7 @@ def reactions_attributes(reactionable)
   end
 
   def reaction_attributes(reactionable, kind, only_reacted: true)
-    attributes = { data: { reaction: { kind: kind } } }
+    attributes = { data: { reaction: { kind: } } }
     attributes[:hidden] = reactionable.reaction_count_by(kind).zero? if only_reacted
     reaction_id = reactionable.find_reaction_id_by(kind, current_user.login_name)
 
diff --git a/app/jobs/ai_answer_create_job.rb b/app/jobs/ai_answer_create_job.rb
index a465d4a4091..5c0bc6c6a66 100644
--- a/app/jobs/ai_answer_create_job.rb
+++ b/app/jobs/ai_answer_create_job.rb
@@ -8,6 +8,6 @@ def perform(question_id:)
     token = Rails.application.secrets[:open_ai][:access_token]
     generator = AI::AnswerGenerator.new(open_ai_access_token: token)
     ai_answer = generator.call("#{question.body}\n#{question.description}")
-    question.update(ai_answer: ai_answer)
+    question.update(ai_answer:)
   end
 end
diff --git a/app/mailers/activity_mailer.rb b/app/mailers/activity_mailer.rb
index 3f6366b4407..c6db253ee7b 100644
--- a/app/mailers/activity_mailer.rb
+++ b/app/mailers/activity_mailer.rb
@@ -34,7 +34,7 @@ def comebacked(args = {})
       kind: Notification.kinds[:comebacked]
     )
     subject = "[FBC] #{@sender.login_name}さんが休会から復帰しました。"
-    mail to: @user.email, subject: subject
+    mail to: @user.email, subject:
   end
 
   # required params: comment, message, receiver
@@ -48,7 +48,7 @@ def came_comment(args = {})
     @user = @receiver
     link = "/#{@comment.commentable_type.downcase.pluralize}/#{@comment.commentable.id}"
     @link_url = notification_redirector_url(
-      link: link,
+      link:,
       kind: Notification.kinds[:came_comment]
     )
     mail to: @user.email, subject: "[FBC] #{@message}"
@@ -67,7 +67,7 @@ def graduated(args = {})
       kind: Notification.kinds[:graduated]
     )
     subject = "[FBC] #{@sender.login_name}さんが卒業しました。"
-    mail to: @user.email, subject: subject
+    mail to: @user.email, subject:
   end
 
   # required params: answer
@@ -95,7 +95,7 @@ def submitted(args = {})
       kind: Notification.kinds[:submitted]
     )
     subject = "[FBC] #{@product.user.login_name}さんが#{@product.title}を提出しました。"
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
 
     message
@@ -112,7 +112,7 @@ def post_announcement(args = {})
       kind: Notification.kinds[:announced]
     )
     subject = "[FBC] お知らせ「#{@announcement.title}」"
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
 
     message
@@ -129,7 +129,7 @@ def came_question(args = {})
       kind: Notification.kinds[:came_question]
     )
     subject = "[FBC] #{@sender.login_name}さんから質問「#{@question.title}」が投稿されました。"
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
 
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
     message
@@ -146,7 +146,7 @@ def retired(args = {})
       kind: Notification.kinds[:retired]
     )
     subject = "[FBC] #{@sender.login_name}さんが退会しました。"
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
 
     message
@@ -163,7 +163,7 @@ def checked(args = {})
       kind: Notification.kinds[:checked]
     )
     subject = "[FBC] #{@user.login_name}さんの#{@check.checkable.title}を確認しました。"
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
 
     message
@@ -180,7 +180,7 @@ def mentioned(args = {})
       kind: Notification.kinds[:mentioned]
     )
     subject = "[FBC] #{@mentionable.where_mention}で#{@mentionable.sender.login_name}さんからメンションがありました。"
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
 
     message
@@ -198,7 +198,7 @@ def create_page(args = {})
     )
     subject = "[FBC] #{@page.user.login_name}さんがDocsに#{@page.title}を投稿しました。"
 
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
 
     message
@@ -214,7 +214,7 @@ def moved_up_event_waiting_user(args = {})
       kind: Notification.kinds[:moved_up_event_waiting_user]
     )
     subject = "[FBC] #{@event.title}で、補欠から参加に繰り上がりました。"
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
 
     message
@@ -232,7 +232,7 @@ def following_report(args = {})
     )
     subject = "[FBC] #{@report.user.login_name}さんが日報【 #{@report.title} 】を書きました！"
 
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
 
     message
@@ -253,7 +253,7 @@ def watching_notification(args = {})
     @action = @watchable.instance_of?(Question) ? '回答' : 'コメント'
     subject = "[FBC] #{@watchable.user.login_name}さんの#{@watchable.notification_title}に#{@sender.login_name}さんが#{@action}しました。"
 
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
     message
   end
@@ -270,7 +270,7 @@ def assigned_as_checker(args = {})
     )
 
     subject = "[FBC] #{@product.user.login_name}さんの提出物#{@product.title}の担当になりました。"
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
 
     message
@@ -288,7 +288,7 @@ def hibernated(args = {})
     )
 
     subject = "[FBC] #{@sender.login_name}さんが休会しました。"
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
     message
   end
@@ -305,7 +305,7 @@ def first_report(args = {})
     )
 
     subject = "[FBC] #{@report.user.login_name}さんがはじめての日報を書きました！"
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
     message
   end
@@ -321,7 +321,7 @@ def consecutive_sad_report(args = {})
       kind: Notification.kinds[:consecutive_sad_report]
     )
     subject = "[FBC] #{@report.user.login_name}さんが#{User::DEPRESSED_SIZE}回連続でsadアイコンの日報を提出しました。"
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
 
     message
@@ -338,7 +338,7 @@ def update_regular_event(args = {})
     )
 
     subject = "[FBC] 定期イベント【#{@regular_event.title}】が更新されました。"
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
 
     message
@@ -356,7 +356,7 @@ def no_correct_answer(args = {})
     )
 
     subject = "[FBC] #{@user.login_name}さんの質問【 #{@question.title} 】のベストアンサーがまだ選ばれていません。"
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
 
     message
@@ -375,7 +375,7 @@ def signed_up(args = {})
     )
 
     subject = "[FBC] #{@sender.login_name}さん#{@sender_roles}が新しく入会しました！"
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
 
     message
@@ -393,7 +393,7 @@ def chose_correct_answer(args = {})
     )
 
     subject = "[FBC] #{@answer.receiver.login_name}さんの質問【 #{@answer.question.title} 】で#{@answer.sender.login_name}さんの回答がベストアンサーに選ばれました。"
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
     message
   end
@@ -409,7 +409,7 @@ def product_update(args = {})
       kind: Notification.kinds[:product_update]
     )
     subject = "[FBC] #{@product.user.login_name}さんが#{@product.title}を更新しました。"
-    message = mail to: @user.email, subject: subject
+    message = mail(to: @user.email, subject:)
     message.perform_deliveries = @user.mail_notification? && !@user.retired?
 
     message
diff --git a/app/mailers/notification_mailer.rb b/app/mailers/notification_mailer.rb
index 18f1b9c548d..eeb7fe87d8b 100644
--- a/app/mailers/notification_mailer.rb
+++ b/app/mailers/notification_mailer.rb
@@ -25,16 +25,16 @@ def mentioned
     @user = @receiver
     @notification = @user.notifications.find_by(link: @mentionable.path)
     subject = "[FBC] #{@mentionable.where_mention}で#{@mentionable.sender.login_name}さんからメンションがありました。"
-    mail to: @user.email, subject: subject
+    mail to: @user.email, subject:
   end
 
   # required params: check
   def checked
     @user = @check.receiver
     link = "/#{@check.checkable_type.downcase.pluralize}/#{@check.checkable.id}"
-    @notification = @user.notifications.find_by(link: link)
+    @notification = @user.notifications.find_by(link:)
     subject = "[FBC] #{@user.login_name}さんの#{@check.checkable.title}を確認しました。"
-    mail to: @user.email, subject: subject
+    mail to: @user.email, subject:
   end
 
   # required params: sender, receiver
@@ -42,7 +42,7 @@ def retired
     @user = @receiver
     @notification = @user.notifications.find_by(link: "/users/#{@sender.id}")
     subject = "[FBC] #{@sender.login_name}さんが退会しました。"
-    mail to: @user.email, subject: subject
+    mail to: @user.email, subject:
   end
 
   # required params: report, receiver
@@ -50,7 +50,7 @@ def trainee_report
     @user = @receiver
     @notification = @user.notifications.find_by(link: "/reports/#{@report.id}")
     subject = "[FBC] #{@report.user.login_name}さんが日報【 #{@report.title} 】を書きました！"
-    mail to: @user.email, subject: subject
+    mail to: @user.email, subject:
   end
 
   # required params: page, receiver
@@ -58,6 +58,6 @@ def create_page
     @user = @receiver
     @notification = @user.notifications.find_by(link: "/pages/#{@page.id}")
     subject = "[FBC] #{@page.user.login_name}さんがDocsに#{@page.title}を投稿しました。"
-    mail to: @user.email, subject: subject
+    mail to: @user.email, subject:
   end
 end