diff --git a/Dockerfile b/Dockerfile
index 97a6913930..8cd3744818 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,6 +15,7 @@ RUN echo "@edge https://nl.alpinelinux.org/alpine/edge/main" >> /etc/apk/reposit
  && apk -U upgrade \
  && apk add -t build-dependencies \
     build-base \
+    libidn-dev \
     libxml2-dev \
     libxslt-dev \
     postgresql-dev \
@@ -27,6 +28,7 @@ RUN echo "@edge https://nl.alpinelinux.org/alpine/edge/main" >> /etc/apk/reposit
     git \
     icu-dev \
     imagemagick@edge \
+    libidn \
     libpq \
     libxml2 \
     libxslt \
diff --git a/app/controllers/activitypub/outboxes_controller.rb b/app/controllers/activitypub/outboxes_controller.rb
index 6a58ccf243..30b91f3702 100644
--- a/app/controllers/activitypub/outboxes_controller.rb
+++ b/app/controllers/activitypub/outboxes_controller.rb
@@ -20,7 +20,6 @@ class ActivityPub::OutboxesController < Api::BaseController
     ActivityPub::CollectionPresenter.new(
       id: account_outbox_url(@account),
       type: :ordered,
-      current: account_outbox_url(@account),
       size: @account.statuses_count,
       items: @statuses
     )
diff --git a/app/controllers/follower_accounts_controller.rb b/app/controllers/follower_accounts_controller.rb
index e58c5ad46e..5edb4d67c8 100644
--- a/app/controllers/follower_accounts_controller.rb
+++ b/app/controllers/follower_accounts_controller.rb
@@ -21,7 +21,6 @@ class FollowerAccountsController < ApplicationController
     ActivityPub::CollectionPresenter.new(
       id: account_followers_url(@account),
       type: :ordered,
-      current: account_followers_url(@account),
       size: @account.followers_count,
       items: @follows.map { |f| ActivityPub::TagManager.instance.uri_for(f.account) }
     )
diff --git a/app/controllers/following_accounts_controller.rb b/app/controllers/following_accounts_controller.rb
index 69f29cd708..7cafe5fda5 100644
--- a/app/controllers/following_accounts_controller.rb
+++ b/app/controllers/following_accounts_controller.rb
@@ -21,7 +21,6 @@ class FollowingAccountsController < ApplicationController
     ActivityPub::CollectionPresenter.new(
       id: account_following_index_url(@account),
       type: :ordered,
-      current: account_following_index_url(@account),
       size: @account.following_count,
       items: @follows.map { |f| ActivityPub::TagManager.instance.uri_for(f.target_account) }
     )
diff --git a/app/controllers/tags_controller.rb b/app/controllers/tags_controller.rb
index 8bcce9e13c..2cd85e185e 100644
--- a/app/controllers/tags_controller.rb
+++ b/app/controllers/tags_controller.rb
@@ -23,7 +23,6 @@ class TagsController < ApplicationController
     ActivityPub::CollectionPresenter.new(
       id: tag_url(@tag),
       type: :ordered,
-      current: tag_url(@tag),
       size: @tag.statuses.count,
       items: @statuses.map { |s| ActivityPub::TagManager.instance.uri_for(s) }
     )
diff --git a/app/javascript/mastodon/components/extended_video_player.js b/app/javascript/mastodon/components/extended_video_player.js
index b38a4b8ff1..5ab5e9e586 100644
--- a/app/javascript/mastodon/components/extended_video_player.js
+++ b/app/javascript/mastodon/components/extended_video_player.js
@@ -32,7 +32,7 @@ export default class ExtendedVideoPlayer extends React.PureComponent {
 
   render () {
     return (
-      <div className='extended-video-player' style={{ width: this.props.width, height: this.props.height }}>
+      <div className='extended-video-player'>
         <video
           ref={this.setRef}
           src={this.props.src}
diff --git a/app/javascript/mastodon/features/compose/components/compose_form.js b/app/javascript/mastodon/features/compose/components/compose_form.js
index 7273edf483..58064fac2f 100644
--- a/app/javascript/mastodon/features/compose/components/compose_form.js
+++ b/app/javascript/mastodon/features/compose/components/compose_form.js
@@ -140,7 +140,7 @@ export default class ComposeForm extends ImmutablePureComponent {
 
   handleEmojiPick = (data) => {
     const position     = this.autosuggestTextarea.textarea.selectionStart;
-    const emojiChar    = String.fromCodePoint(parseInt(data.unicode, 16));
+    const emojiChar    = data.unicode.split('-').map(code => String.fromCodePoint(parseInt(code, 16))).join('');
     this._restoreCaret = position + emojiChar.length + 1;
     this.props.onPickEmoji(position, data);
   }
diff --git a/app/javascript/mastodon/main.js b/app/javascript/mastodon/main.js
index b237e9aeee..80a169f516 100644
--- a/app/javascript/mastodon/main.js
+++ b/app/javascript/mastodon/main.js
@@ -8,8 +8,6 @@ function main() {
   const React = require('react');
   const ReactDOM = require('react-dom');
 
-  require.context('../images/', true);
-
   if (window.history && history.replaceState) {
     const { pathname, search, hash } = window.location;
     const path = pathname + search + hash;
diff --git a/app/javascript/mastodon/reducers/compose.js b/app/javascript/mastodon/reducers/compose.js
index 0c5dbccabd..4dce634a4f 100644
--- a/app/javascript/mastodon/reducers/compose.js
+++ b/app/javascript/mastodon/reducers/compose.js
@@ -126,7 +126,7 @@ const insertSuggestion = (state, position, token, completion) => {
 };
 
 const insertEmoji = (state, position, emojiData) => {
-  const emoji = String.fromCodePoint(parseInt(emojiData.unicode, 16));
+  const emoji = emojiData.unicode.split('-').map(code => String.fromCodePoint(parseInt(code, 16))).join('');
 
   return state.withMutations(map => {
     map.update('text', oldText => `${oldText.slice(0, position)}${emoji} ${oldText.slice(position)}`);
diff --git a/app/javascript/packs/common.js b/app/javascript/packs/common.js
index a0cb91ae4b..ba7053f1fc 100644
--- a/app/javascript/packs/common.js
+++ b/app/javascript/packs/common.js
@@ -4,4 +4,6 @@ import { start } from 'rails-ujs';
 require('font-awesome/css/font-awesome.css');
 require('mastodon-application-style');
 
+require.context('../images/', true);
+
 start();
diff --git a/app/javascript/packs/public.js b/app/javascript/packs/public.js
index 4865f3ec0d..39daef7614 100644
--- a/app/javascript/packs/public.js
+++ b/app/javascript/packs/public.js
@@ -7,8 +7,6 @@ import loadPolyfills from '../mastodon/load_polyfills';
 import { processBio } from '../glitch/util/bio_metadata';
 import ready from '../mastodon/ready';
 
-require.context('../images/', true);
-
 const { localeData } = getLocale();
 localeData.forEach(IntlRelativeFormat.__addLocaleData);
 
diff --git a/app/javascript/styles/components.scss b/app/javascript/styles/components.scss
index f12c8fbd1d..a09a33e009 100644
--- a/app/javascript/styles/components.scss
+++ b/app/javascript/styles/components.scss
@@ -1384,8 +1384,8 @@
     top: 0;
     left: 0;
     right: 0;
-    width: 100%;
-    height: 100%;
+    max-width: 100%;
+    max-height: 100%;
     background-image: none;
   }
 
@@ -3313,8 +3313,9 @@ button.icon-button.active i.fa-retweet {
   video {
     max-width: 80vw;
     max-height: 80vh;
-    width: 100%;
+    width: auto;
     height: auto;
+    margin: auto;
   }
 
   .extended-video-player,
@@ -3330,6 +3331,10 @@ button.icon-button.active i.fa-retweet {
     background: url('../images/void.png') repeat;
     object-fit: contain;
   }
+
+  .react-swipeable-view-container {
+    max-width: 80vw;
+  }
 }
 
 .media-modal__close {
diff --git a/app/presenters/activitypub/collection_presenter.rb b/app/presenters/activitypub/collection_presenter.rb
index 6bae2955ea..631d87cd03 100644
--- a/app/presenters/activitypub/collection_presenter.rb
+++ b/app/presenters/activitypub/collection_presenter.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 class ActivityPub::CollectionPresenter < ActiveModelSerializers::Model
-  attributes :id, :type, :current, :size, :items
+  attributes :id, :type, :size, :items
 end
diff --git a/app/serializers/activitypub/accept_follow_serializer.rb b/app/serializers/activitypub/accept_follow_serializer.rb
new file mode 100644
index 0000000000..ce900bc780
--- /dev/null
+++ b/app/serializers/activitypub/accept_follow_serializer.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+class ActivityPub::AcceptFollowSerializer < ActiveModel::Serializer
+  attributes :type, :actor
+
+  has_one :object, serializer: ActivityPub::FollowSerializer
+
+  def type
+    'Accept'
+  end
+
+  def actor
+    ActivityPub::TagManager.instance.uri_for(object.target_account)
+  end
+end
diff --git a/app/serializers/activitypub/actor_serializer.rb b/app/serializers/activitypub/actor_serializer.rb
index 56806152ee..f5e626d737 100644
--- a/app/serializers/activitypub/actor_serializer.rb
+++ b/app/serializers/activitypub/actor_serializer.rb
@@ -7,6 +7,8 @@ class ActivityPub::ActorSerializer < ActiveModel::Serializer
              :inbox, :outbox, :preferred_username,
              :name, :summary, :icon, :image
 
+  has_one :public_key, serializer: ActivityPub::PublicKeySerializer
+
   def id
     account_url(object)
   end
@@ -50,4 +52,8 @@ class ActivityPub::ActorSerializer < ActiveModel::Serializer
   def image
     full_asset_url(object.header.url(:original))
   end
+
+  def public_key
+    object
+  end
 end
diff --git a/app/serializers/activitypub/block_serializer.rb b/app/serializers/activitypub/block_serializer.rb
new file mode 100644
index 0000000000..a001b213b8
--- /dev/null
+++ b/app/serializers/activitypub/block_serializer.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class ActivityPub::BlockSerializer < ActiveModel::Serializer
+  attributes :type, :actor
+  attribute :virtual_object, key: :object
+
+  def type
+    'Block'
+  end
+
+  def actor
+    ActivityPub::TagManager.instance.uri_for(object.account)
+  end
+
+  def virtual_object
+    ActivityPub::TagManager.instance.uri_for(object.target_account)
+  end
+end
diff --git a/app/serializers/activitypub/collection_serializer.rb b/app/serializers/activitypub/collection_serializer.rb
index baaba76543..d01dead289 100644
--- a/app/serializers/activitypub/collection_serializer.rb
+++ b/app/serializers/activitypub/collection_serializer.rb
@@ -6,8 +6,7 @@ class ActivityPub::CollectionSerializer < ActiveModel::Serializer
     super
   end
 
-  attributes :id, :type, :total_items,
-             :current
+  attributes :id, :type, :total_items
 
   has_many :items, key: :ordered_items
 
diff --git a/app/serializers/activitypub/delete_serializer.rb b/app/serializers/activitypub/delete_serializer.rb
new file mode 100644
index 0000000000..77098b1b0c
--- /dev/null
+++ b/app/serializers/activitypub/delete_serializer.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class ActivityPub::DeleteSerializer < ActiveModel::Serializer
+  attributes :type, :actor
+  attribute :virtual_object, key: :object
+
+  def type
+    'Delete'
+  end
+
+  def actor
+    ActivityPub::TagManager.instance.uri_for(object.account)
+  end
+
+  def virtual_object
+    ActivityPub::TagManager.instance.uri_for(object)
+  end
+end
diff --git a/app/serializers/activitypub/follow_serializer.rb b/app/serializers/activitypub/follow_serializer.rb
new file mode 100644
index 0000000000..1953a2d7b8
--- /dev/null
+++ b/app/serializers/activitypub/follow_serializer.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class ActivityPub::FollowSerializer < ActiveModel::Serializer
+  attributes :type, :actor
+  attribute :virtual_object, key: :object
+
+  def type
+    'Follow'
+  end
+
+  def actor
+    ActivityPub::TagManager.instance.uri_for(object.account)
+  end
+
+  def virtual_object
+    ActivityPub::TagManager.instance.uri_for(object.target_account)
+  end
+end
diff --git a/app/serializers/activitypub/like_serializer.rb b/app/serializers/activitypub/like_serializer.rb
new file mode 100644
index 0000000000..4226913f50
--- /dev/null
+++ b/app/serializers/activitypub/like_serializer.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class ActivityPub::LikeSerializer < ActiveModel::Serializer
+  attributes :type, :actor
+  attribute :virtual_object, key: :object
+
+  def type
+    'Like'
+  end
+
+  def actor
+    ActivityPub::TagManager.instance.uri_for(object.account)
+  end
+
+  def virtual_object
+    ActivityPub::TagManager.instance.uri_for(object.status)
+  end
+end
diff --git a/app/serializers/activitypub/note_serializer.rb b/app/serializers/activitypub/note_serializer.rb
index ffdc6175d4..4c13f8e596 100644
--- a/app/serializers/activitypub/note_serializer.rb
+++ b/app/serializers/activitypub/note_serializer.rb
@@ -3,7 +3,7 @@
 class ActivityPub::NoteSerializer < ActiveModel::Serializer
   attributes :id, :type, :summary, :content,
              :in_reply_to, :published, :url,
-             :actor, :to, :cc, :sensitive
+             :attributed_to, :to, :cc, :sensitive
 
   has_many :media_attachments, key: :attachment
   has_many :virtual_tags, key: :tag
@@ -36,7 +36,7 @@ class ActivityPub::NoteSerializer < ActiveModel::Serializer
     ActivityPub::TagManager.instance.url_for(object)
   end
 
-  def actor
+  def attributed_to
     ActivityPub::TagManager.instance.uri_for(object.account)
   end
 
diff --git a/app/serializers/activitypub/public_key_serializer.rb b/app/serializers/activitypub/public_key_serializer.rb
new file mode 100644
index 0000000000..38e9e93baa
--- /dev/null
+++ b/app/serializers/activitypub/public_key_serializer.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class ActivityPub::PublicKeySerializer < ActiveModel::Serializer
+  attributes :id, :owner, :public_key_pem
+
+  def id
+    [ActivityPub::TagManager.instance.uri_for(object), '#main-key'].join
+  end
+
+  def owner
+    ActivityPub::TagManager.instance.uri_for(object)
+  end
+
+  def public_key_pem
+    object.public_key
+  end
+end
diff --git a/app/serializers/activitypub/reject_follow_serializer.rb b/app/serializers/activitypub/reject_follow_serializer.rb
new file mode 100644
index 0000000000..28584d6271
--- /dev/null
+++ b/app/serializers/activitypub/reject_follow_serializer.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+class ActivityPub::RejectFollowSerializer < ActiveModel::Serializer
+  attributes :type, :actor
+
+  has_one :object, serializer: ActivityPub::FollowSerializer
+
+  def type
+    'Reject'
+  end
+
+  def actor
+    ActivityPub::TagManager.instance.uri_for(object.target_account)
+  end
+end
diff --git a/app/serializers/activitypub/undo_block_serializer.rb b/app/serializers/activitypub/undo_block_serializer.rb
new file mode 100644
index 0000000000..f71faa7296
--- /dev/null
+++ b/app/serializers/activitypub/undo_block_serializer.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+class ActivityPub::UndoBlockSerializer < ActiveModel::Serializer
+  attributes :type, :actor
+
+  has_one :object, serializer: ActivityPub::BlockSerializer
+
+  def type
+    'Undo'
+  end
+
+  def actor
+    ActivityPub::TagManager.instance.uri_for(object.account)
+  end
+end
diff --git a/app/serializers/activitypub/undo_follow_serializer.rb b/app/serializers/activitypub/undo_follow_serializer.rb
new file mode 100644
index 0000000000..fe91f5f1c4
--- /dev/null
+++ b/app/serializers/activitypub/undo_follow_serializer.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+class ActivityPub::UndoFollowSerializer < ActiveModel::Serializer
+  attributes :type, :actor
+
+  has_one :object, serializer: ActivityPub::FollowSerializer
+
+  def type
+    'Undo'
+  end
+
+  def actor
+    ActivityPub::TagManager.instance.uri_for(object.account)
+  end
+end
diff --git a/app/serializers/activitypub/undo_like_serializer.rb b/app/serializers/activitypub/undo_like_serializer.rb
new file mode 100644
index 0000000000..db9cd1d0de
--- /dev/null
+++ b/app/serializers/activitypub/undo_like_serializer.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+class ActivityPub::UndoLikeSerializer < ActiveModel::Serializer
+  attributes :type, :actor
+
+  has_one :object, serializer: ActivityPub::LikeSerializer
+
+  def type
+    'Undo'
+  end
+
+  def actor
+    ActivityPub::TagManager.instance.uri_for(object.account)
+  end
+end
diff --git a/app/serializers/activitypub/update_serializer.rb b/app/serializers/activitypub/update_serializer.rb
new file mode 100644
index 0000000000..322305da8c
--- /dev/null
+++ b/app/serializers/activitypub/update_serializer.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+class ActivityPub::UpdateSerializer < ActiveModel::Serializer
+  attributes :type, :actor
+
+  has_one :object, serializer: ActivityPub::ActorSerializer
+
+  def type
+    'Update'
+  end
+
+  def actor
+    ActivityPub::TagManager.instance.uri_for(object)
+  end
+end
diff --git a/app/workers/web_push_notification_worker.rb b/app/workers/web_push_notification_worker.rb
index 0568a3e028..e8f1d72bd4 100644
--- a/app/workers/web_push_notification_worker.rb
+++ b/app/workers/web_push_notification_worker.rb
@@ -9,7 +9,7 @@ class WebPushNotificationWorker
     recipient = Account.find(recipient_id)
     notification = Notification.find(notification_id)
 
-    sessions_with_subscriptions = recipient.user.session_activations.reject { |session| session.web_push_subscription.nil? }
+    sessions_with_subscriptions = recipient.user.session_activations.where.not(web_push_subscription: nil)
 
     sessions_with_subscriptions.each do |session|
       begin
@@ -17,8 +17,7 @@ class WebPushNotificationWorker
       rescue Webpush::InvalidSubscription, Webpush::ExpiredSubscription
         # Subscription expiration is not currently implemented in any browser
         session.web_push_subscription.destroy!
-        session.web_push_subscription = nil
-        session.save!
+        session.update!(web_push_subscription: nil)
       rescue Webpush::PayloadTooLarge => e
         Rails.logger.error(e)
       end
diff --git a/config/environments/production.rb b/config/environments/production.rb
index d71e410bf8..928fd13e50 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -85,6 +85,7 @@ Rails.application.configure do
     :ca_file              => ENV['SMTP_CA_FILE'].presence,
     :openssl_verify_mode  => ENV['SMTP_OPENSSL_VERIFY_MODE'],
     :enable_starttls_auto => ENV['SMTP_ENABLE_STARTTLS_AUTO'] || true,
+    :tls                  => ENV['SMTP_TLS'].presence,
   }
 
   config.action_mailer.delivery_method = ENV.fetch('SMTP_DELIVERY_METHOD', 'smtp').to_sym
diff --git a/config/locales/pl.yml b/config/locales/pl.yml
index 6f2831670a..98cfe1b771 100644
--- a/config/locales/pl.yml
+++ b/config/locales/pl.yml
@@ -10,7 +10,7 @@ pl:
     domain_count_after: instancji
     domain_count_before: Serwer połączony z
     features:
-      humane_approach_body: Nauczeni na błędach innych sieci społecznościowych, Mastodon został zaprojektowany tak, aby uniknąć częstych nadużyć.
+      humane_approach_body: Nauczeni na błędach innych sieci społecznościowych, zaprojektowaliśmy Mastodona tak, aby uniknąć częstych nadużyć.
       humane_approach_title: Bardziej ludzkie podejście
       not_a_product_body: Mastodon nie jest komercyjną siecią. Nie doświadczysz tu reklam, zbierania danych, ani centralnego ośrodka, tak jak w przypadku wielu rozwiązań.
       not_a_product_title: Jesteś człowiekiem, nie produktem
diff --git a/config/locales/simple_form.en.yml b/config/locales/simple_form.en.yml
index fbaf0ff689..476ccc7731 100644
--- a/config/locales/simple_form.en.yml
+++ b/config/locales/simple_form.en.yml
@@ -8,7 +8,7 @@ en:
           one: <span class="name-counter">1</span> character left
           other: <span class="name-counter">%{count}</span> characters left
         header: PNG, GIF or JPG. At most 2MB. Will be downscaled to 700x335px
-        locked: Requires you to manually approve followers and defaults post privacy to followers-only
+        locked: Requires you to manually approve followers
         note:
           one: <span class="note-counter">1</span> character left
           other: <span class="note-counter">%{count}</span> characters left
diff --git a/config/locales/simple_form.ja.yml b/config/locales/simple_form.ja.yml
index 9342398a8c..74cf91de46 100644
--- a/config/locales/simple_form.ja.yml
+++ b/config/locales/simple_form.ja.yml
@@ -6,7 +6,7 @@ ja:
         avatar: 2MBまでのPNGやGIF、JPGが利用可能です。120x120pxまで縮小されます。
         display_name: あと<span class="name-counter">%{count}</span>文字入力できます。
         header: 2MBまでのPNGやGIF、JPGが利用可能です。 700x335pxまで縮小されます。
-        locked: フォロワーを手動で承認する必要があります。デフォルトではトゥートの公開範囲はフォロワーのみです。
+        locked: フォロワーを手動で承認する必要があります。
         note: あと<span class="note-counter">%{count}</span>文字入力できます。
       imports:
         data: 他の Mastodon インスタンスからエクスポートしたCSVファイルを選択して下さい
diff --git a/config/locales/simple_form.pl.yml b/config/locales/simple_form.pl.yml
index e4c4d7c8c9..5553c75e33 100644
--- a/config/locales/simple_form.pl.yml
+++ b/config/locales/simple_form.pl.yml
@@ -10,7 +10,7 @@ pl:
           one: Pozostał <span class="name-counter">1</span> znak.
           other: Pozostało <span class="name-counter">%{count}</span> znaków
         header: PNG, GIF lub JPG. Maksymalnie 2MB. Zostanie zmniejszony do 700x335px
-        locked: Musisz akceptować obserwacje; Twoje wpisy są domyślnie widoczne tylko dla Twoich obserwujących
+        locked: Musisz akceptować prośby o śledzenie
         note:
           few: Pozostały <span class="name-counter">%{count}</span> znaki.
           many: Pozostało <span class="name-counter">%{count}</span> znaków
diff --git a/lib/tasks/mastodon.rake b/lib/tasks/mastodon.rake
index 010139e91d..bceeeaf011 100644
--- a/lib/tasks/mastodon.rake
+++ b/lib/tasks/mastodon.rake
@@ -232,9 +232,16 @@ namespace :mastodon do
     task prepare_for_foreign_keys: :environment do
       # All the deletes:
       ActiveRecord::Base.connection.execute('DELETE FROM statuses USING statuses s LEFT JOIN accounts a ON a.id = s.account_id WHERE statuses.id = s.id AND a.id IS NULL')
-      ActiveRecord::Base.connection.execute('DELETE FROM account_domain_blocks USING account_domain_blocks adb LEFT JOIN accounts a ON a.id = adb.account_id WHERE account_domain_blocks.id = adb.id AND a.id IS NULL')
-      ActiveRecord::Base.connection.execute('DELETE FROM conversation_mutes USING conversation_mutes cm LEFT JOIN accounts a ON a.id = cm.account_id WHERE conversation_mutes.id = cm.id AND a.id IS NULL')
-      ActiveRecord::Base.connection.execute('DELETE FROM conversation_mutes USING conversation_mutes cm LEFT JOIN conversations c ON c.id = cm.conversation_id WHERE conversation_mutes.id = cm.id AND c.id IS NULL')
+
+      if ActiveRecord::Base.connection.table_exists? :account_domain_blocks
+        ActiveRecord::Base.connection.execute('DELETE FROM account_domain_blocks USING account_domain_blocks adb LEFT JOIN accounts a ON a.id = adb.account_id WHERE account_domain_blocks.id = adb.id AND a.id IS NULL')
+      end
+
+      if ActiveRecord::Base.connection.table_exists? :conversation_mutes
+        ActiveRecord::Base.connection.execute('DELETE FROM conversation_mutes USING conversation_mutes cm LEFT JOIN accounts a ON a.id = cm.account_id WHERE conversation_mutes.id = cm.id AND a.id IS NULL')
+        ActiveRecord::Base.connection.execute('DELETE FROM conversation_mutes USING conversation_mutes cm LEFT JOIN conversations c ON c.id = cm.conversation_id WHERE conversation_mutes.id = cm.id AND c.id IS NULL')
+      end
+
       ActiveRecord::Base.connection.execute('DELETE FROM favourites USING favourites f LEFT JOIN accounts a ON a.id = f.account_id WHERE favourites.id = f.id AND a.id IS NULL')
       ActiveRecord::Base.connection.execute('DELETE FROM favourites USING favourites f LEFT JOIN statuses s ON s.id = f.status_id WHERE favourites.id = f.id AND s.id IS NULL')
       ActiveRecord::Base.connection.execute('DELETE FROM blocks USING blocks b LEFT JOIN accounts a ON a.id = b.account_id WHERE blocks.id = b.id AND a.id IS NULL')