diff --git a/app/mailers/notify_lack_mailer.rb b/app/mailers/notify_lack_mailer.rb
index 4c88df6b..9449ba20 100644
--- a/app/mailers/notify_lack_mailer.rb
+++ b/app/mailers/notify_lack_mailer.rb
@@ -1,12 +1,12 @@
 class NotifyLackMailer < ApplicationMailer
-  def lack_exist_email(user, cars)
+  def lack_exist_email(cars)
     @cars = cars
     subject = if cars.empty?
                 '乗車記録に欠落はありません'
               else
                 '乗車記録に欠落があります'
               end
-    mail(:to => user.email,
+    mail(:to => Rails.application.secrets.mailing_list_address,
          :subject => subject)
   end
 end
diff --git a/config/secrets.yml b/config/secrets.yml
index 5245bd6e..7f17dba1 100644
--- a/config/secrets.yml
+++ b/config/secrets.yml
@@ -31,3 +31,4 @@ production:
   sendgrid_api_key: <%= ENV['SEND_GRID_API_KEY'] %>
   domain: <%= ENV['MAIL_DOMAIN'] %>
   site_domain: <%= ENV['SITE_DOMAIN'] %>
+  mailing_list_address: <%= ENV['MAILING_LIST_ADDRESS'] %>
diff --git a/lib/tasks/check_drive_lack.rake b/lib/tasks/check_drive_lack.rake
index 165e6258..94bc7481 100644
--- a/lib/tasks/check_drive_lack.rake
+++ b/lib/tasks/check_drive_lack.rake
@@ -3,7 +3,5 @@ task check_drive_lack: :environment do
     car.drives.only_checked.lack_exist?
   end
 
-  User.admin.each do |user|
-    NotifyLackMailer.lack_exist_email(user, cars_with_lack).deliver_now
-  end
+  NotifyLackMailer.lack_exist_email(cars_with_lack).deliver_now
 end
\ No newline at end of file