diff --git a/app/workers/pubsubhubbub/subscribe_worker.rb b/app/workers/pubsubhubbub/subscribe_worker.rb
index 130c967e0..7560c2671 100644
--- a/app/workers/pubsubhubbub/subscribe_worker.rb
+++ b/app/workers/pubsubhubbub/subscribe_worker.rb
@@ -3,7 +3,7 @@
 class Pubsubhubbub::SubscribeWorker
   include Sidekiq::Worker
 
-  sidekiq_options queue: 'push', retry: 10, unique: :until_executed, dead: false, unique_retry: true
+  sidekiq_options queue: 'push', retry: 10, unique: :until_executed, dead: false
 
   sidekiq_retry_in do |count|
     case count
diff --git a/config/application.rb b/config/application.rb
index f98f7af16..b6ce74147 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -10,7 +10,6 @@ require_relative '../app/lib/exceptions'
 require_relative '../lib/paperclip/gif_transcoder'
 require_relative '../lib/paperclip/video_transcoder'
 require_relative '../lib/mastodon/version'
-require_relative '../lib/mastodon/unique_retry_job_middleware'
 
 Dotenv::Railtie.load
 
diff --git a/config/initializers/sidekiq.rb b/config/initializers/sidekiq.rb
index 0ee77730e..b70784d79 100644
--- a/config/initializers/sidekiq.rb
+++ b/config/initializers/sidekiq.rb
@@ -9,14 +9,8 @@ end
 
 Sidekiq.configure_server do |config|
   config.redis = redis_params
-  config.client_middleware do |chain|
-    chain.add Mastodon::UniqueRetryJobMiddleware
-  end
 end
 
 Sidekiq.configure_client do |config|
   config.redis = redis_params
-  config.client_middleware do |chain|
-    chain.add Mastodon::UniqueRetryJobMiddleware
-  end
 end
diff --git a/lib/mastodon/unique_retry_job_middleware.rb b/lib/mastodon/unique_retry_job_middleware.rb
deleted file mode 100644
index 75da8a0c9..000000000
--- a/lib/mastodon/unique_retry_job_middleware.rb
+++ /dev/null
@@ -1,20 +0,0 @@
-# frozen_string_literal: true
-
-class Mastodon::UniqueRetryJobMiddleware
-  def call(_worker_class, item, _queue, _redis_pool)
-    return if item['unique_retry'] && retried?(item)
-    yield
-  end
-
-  private
-
-  def retried?(item)
-    # Use unique digest key of SidekiqUniqueJobs
-    unique_key = SidekiqUniqueJobs::UNIQUE_DIGEST_KEY
-    unique_digest = item[unique_key]
-    class_name = item['class']
-    retries = Sidekiq::RetrySet.new
-
-    retries.any? { |job| job.item['class'] == class_name && job.item[unique_key] == unique_digest }
-  end
-end