diff --git a/app/jobs/registrant_change_expired_email_job.rb b/app/jobs/registrant_change_expired_email_job.rb
index 68712af400..17b57be52e 100644
--- a/app/jobs/registrant_change_expired_email_job.rb
+++ b/app/jobs/registrant_change_expired_email_job.rb
@@ -12,7 +12,8 @@ def perform(domain_id)
   private
 
   def log(domain)
-    message = "Send RegistrantChangeMailer#expired email for domain #{domain.name} (##{domain.id}) to #{domain.new_registrant_email}"
+    message = 'Send RegistrantChangeMailer#expired email for domain '\
+               "#{domain.name} (##{domain.id}) to #{domain.new_registrant_email}"
     logger.info(message)
   end
 
diff --git a/app/models/concerns/domain/deletable.rb b/app/models/concerns/domain/deletable.rb
index db81856b8d..9143cdf27c 100644
--- a/app/models/concerns/domain/deletable.rb
+++ b/app/models/concerns/domain/deletable.rb
@@ -19,8 +19,12 @@ def delete_later
   end
 
   def do_not_delete_later
-    # Que job can be manually deleted in admin area UI
-    QueJob.find_by("args->>0 = '#{id}'", job_class: DomainDeleteJob.name)&.destroy
+    return if Rails.env.test?
+
+    jobs = Sidekiq::ScheduledSet.new.select do |job|
+      job.args.first['job_class'] == 'DomainDeleteJob' && job.args.first['arguments'] == [id]
+    end
+    jobs.each(&:delete)
   end
 
   def deletion_time_span
diff --git a/app/models/que_job.rb b/app/models/que_job.rb
deleted file mode 100644
index f9dd50ac87..0000000000
--- a/app/models/que_job.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-# To be able to remove existing jobs
-class QueJob < ApplicationRecord
-  self.primary_key = 'job_id'
-end
diff --git a/test/interactions/expire_period/start_test.rb b/test/interactions/expire_period/start_test.rb
index a1b9e9dc85..766f07ae5b 100644
--- a/test/interactions/expire_period/start_test.rb
+++ b/test/interactions/expire_period/start_test.rb
@@ -1,5 +1,4 @@
 require 'test_helper'
-require 'sidekiq/testing'
 
 class StartTest < ActiveSupport::TestCase
   include ActionMailer::TestHelper
@@ -11,7 +10,7 @@ class StartTest < ActiveSupport::TestCase
   end
 
   def test_sets_expired
-    Sidekiq::Testing.inline! do
+    Sidekiq::Testing.fake! do
       perform_enqueued_jobs do
         DomainCron.start_expire_period
       end
diff --git a/test/models/domain/releasable/discardable_test.rb b/test/models/domain/releasable/discardable_test.rb
index 796b4eac5d..a5ff9309e3 100644
--- a/test/models/domain/releasable/discardable_test.rb
+++ b/test/models/domain/releasable/discardable_test.rb
@@ -1,4 +1,6 @@
 require 'test_helper'
+require 'sidekiq/testing'
+Sidekiq::Testing.fake!
 
 class DomainReleasableDiscardableTest < ActiveSupport::TestCase
   include ActiveJob::TestHelper
@@ -44,11 +46,7 @@ def test_ignores_already_discarded_domains
 
     Domain.release_domains
 
-    job_count = lambda do
-      QueJob.where("args->>0 = '#{@domain.id}'", job_class: DomainDeleteJob.name).count
-    end
-
-    assert_no_difference job_count, 'A domain should not be discarded again' do
+    assert_no_enqueued_jobs do
       Domain.release_domains
     end
   end
@@ -104,7 +102,8 @@ def test_keeping_a_domain_bypasses_validation
 
   def test_keeping_a_domain_cancels_domain_deletion
     @domain.update!(statuses: [DomainStatus::DELETE_CANDIDATE])
-    @domain.keep
-    assert_nil QueJob.find_by("args->>0 = '#{@domain.id}'", job_class: DomainDeleteJob.name)
+    assert_no_enqueued_jobs only: DomainDeleteJob do
+      @domain.keep
+    end
   end
 end
diff --git a/test/system/admin_area/domains_test.rb b/test/system/admin_area/domains_test.rb
index 05e7d60f36..9a59247fe7 100644
--- a/test/system/admin_area/domains_test.rb
+++ b/test/system/admin_area/domains_test.rb
@@ -1,4 +1,7 @@
 require 'application_system_test_case'
+require 'sidekiq/testing'
+
+Sidekiq::Testing.fake!
 
 class AdminDomainsTestTest < ApplicationSystemTestCase
   setup do
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 578c3ee9b2..df2e9878ef 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -18,6 +18,9 @@
 require 'capybara/minitest'
 require 'webmock/minitest'
 require 'support/assertions/epp_assertions'
+require 'sidekiq/testing'
+
+Sidekiq::Testing.fake!
 
 
 # `bin/rails test` is not the same as `bin/rake test`.