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-rw-r--r--app/controllers/accounts_controller.rb2
-rw-r--r--app/controllers/api/base_controller.rb6
-rw-r--r--app/controllers/settings/sessions_controller.rb17
-rw-r--r--app/controllers/stream_entries_controller.rb2
-rw-r--r--app/helpers/routing_helper.rb4
-rw-r--r--app/javascript/mastodon/actions/statuses.js2
-rw-r--r--app/javascript/mastodon/actions/timelines.js2
-rw-r--r--app/javascript/mastodon/components/status_list.js22
-rw-r--r--app/javascript/mastodon/emoji.js10
-rw-r--r--app/javascript/mastodon/emojione_light.js4
-rw-r--r--app/javascript/mastodon/locales/ja.json2
-rw-r--r--app/javascript/mastodon/locales/pl.json14
-rw-r--r--app/javascript/packs/public.js2
-rw-r--r--app/javascript/styles/components.scss4
-rw-r--r--app/lib/exceptions.rb10
-rw-r--r--app/lib/ostatus/activity/base.rb2
-rw-r--r--app/lib/ostatus/activity/creation.rb2
-rw-r--r--app/lib/ostatus/activity/deletion.rb2
-rw-r--r--app/lib/ostatus/activity/general.rb8
-rw-r--r--app/lib/ostatus/activity/post.rb2
-rw-r--r--app/lib/ostatus/activity/remote.rb2
-rw-r--r--app/lib/ostatus/activity/share.rb4
-rw-r--r--app/lib/ostatus/atom_serializer.rb2
-rw-r--r--app/models/account.rb7
-rw-r--r--app/models/web/push_subscription.rb18
-rw-r--r--app/services/authorize_follow_service.rb2
-rw-r--r--app/services/block_service.rb2
-rw-r--r--app/services/concerns/stream_entry_renderer.rb2
-rw-r--r--app/services/favourite_service.rb2
-rw-r--r--app/services/fetch_remote_account_service.rb3
-rw-r--r--app/services/fetch_remote_status_service.rb3
-rw-r--r--app/services/follow_service.rb4
-rw-r--r--app/services/notify_service.rb7
-rw-r--r--app/services/process_feed_service.rb4
-rw-r--r--app/services/process_interaction_service.rb2
-rw-r--r--app/services/reject_follow_service.rb2
-rw-r--r--app/services/resolve_remote_account_service.rb173
-rw-r--r--app/services/send_interaction_service.rb4
-rw-r--r--app/services/subscribe_service.rb4
-rw-r--r--app/services/unblock_service.rb2
-rw-r--r--app/services/unfavourite_service.rb2
-rw-r--r--app/services/unfollow_service.rb2
-rw-r--r--app/services/unsubscribe_service.rb2
-rw-r--r--app/views/auth/registrations/_sessions.html.haml4
-rw-r--r--app/workers/import_worker.rb6
-rw-r--r--app/workers/pubsubhubbub/delivery_worker.rb2
-rw-r--r--app/workers/pubsubhubbub/distribution_worker.rb4
47 files changed, 245 insertions, 145 deletions
diff --git a/app/controllers/accounts_controller.rb b/app/controllers/accounts_controller.rb
index 37a1e540f..c270eb000 100644
--- a/app/controllers/accounts_controller.rb
+++ b/app/controllers/accounts_controller.rb
@@ -13,7 +13,7 @@ class AccountsController < ApplicationController
 
       format.atom do
         @entries = @account.stream_entries.where(hidden: false).with_includes.paginate_by_max_id(20, params[:max_id], params[:since_id])
-        render xml: Ostatus::AtomSerializer.render(Ostatus::AtomSerializer.new.feed(@account, @entries.to_a))
+        render xml: OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.feed(@account, @entries.to_a))
       end
 
       format.json do
diff --git a/app/controllers/api/base_controller.rb b/app/controllers/api/base_controller.rb
index c1b2ec3cf..105a2859d 100644
--- a/app/controllers/api/base_controller.rb
+++ b/app/controllers/api/base_controller.rb
@@ -17,11 +17,7 @@ class Api::BaseController < ApplicationController
     render json: { error: 'Record not found' }, status: 404
   end
 
-  rescue_from Goldfinger::Error do
-    render json: { error: 'Remote account could not be resolved' }, status: 422
-  end
-
-  rescue_from HTTP::Error do
+  rescue_from HTTP::Error, Mastodon::UnexpectedResponseError do
     render json: { error: 'Remote data could not be fetched' }, status: 503
   end
 
diff --git a/app/controllers/settings/sessions_controller.rb b/app/controllers/settings/sessions_controller.rb
new file mode 100644
index 000000000..0da1b027b
--- /dev/null
+++ b/app/controllers/settings/sessions_controller.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class Settings::SessionsController < ApplicationController
+  before_action :set_session, only: :destroy
+
+  def destroy
+    @session.destroy!
+    flash[:notice] = I18n.t('sessions.revoke_success')
+    redirect_to edit_user_registration_path
+  end
+
+  private
+
+  def set_session
+    @session = current_user.session_activations.find(params[:id])
+  end
+end
diff --git a/app/controllers/stream_entries_controller.rb b/app/controllers/stream_entries_controller.rb
index e3db77caa..3eb91d830 100644
--- a/app/controllers/stream_entries_controller.rb
+++ b/app/controllers/stream_entries_controller.rb
@@ -19,7 +19,7 @@ class StreamEntriesController < ApplicationController
       end
 
       format.atom do
-        render xml: Ostatus::AtomSerializer.render(Ostatus::AtomSerializer.new.entry(@stream_entry, true))
+        render xml: OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.entry(@stream_entry, true))
       end
     end
   end
diff --git a/app/helpers/routing_helper.rb b/app/helpers/routing_helper.rb
index 9650ee286..8126176ba 100644
--- a/app/helpers/routing_helper.rb
+++ b/app/helpers/routing_helper.rb
@@ -11,7 +11,7 @@ module RoutingHelper
     end
   end
 
-  def full_asset_url(source)
-    Rails.configuration.x.use_s3 ? source : URI.join(root_url, ActionController::Base.helpers.asset_url(source)).to_s
+  def full_asset_url(source, options = {})
+    Rails.configuration.x.use_s3 ? source : URI.join(root_url, ActionController::Base.helpers.asset_url(source, options)).to_s
   end
 end
diff --git a/app/javascript/mastodon/actions/statuses.js b/app/javascript/mastodon/actions/statuses.js
index 8d385715c..2204e0b14 100644
--- a/app/javascript/mastodon/actions/statuses.js
+++ b/app/javascript/mastodon/actions/statuses.js
@@ -113,7 +113,7 @@ export function fetchContext(id) {
       dispatch(fetchContextSuccess(id, response.data.ancestors, response.data.descendants));
 
     }).catch(error => {
-      if (error.response.status === 404) {
+      if (error.response && error.response.status === 404) {
         dispatch(deleteFromTimelines(id));
       }
 
diff --git a/app/javascript/mastodon/actions/timelines.js b/app/javascript/mastodon/actions/timelines.js
index dd14cb1cd..5c0cd93c7 100644
--- a/app/javascript/mastodon/actions/timelines.js
+++ b/app/javascript/mastodon/actions/timelines.js
@@ -105,7 +105,7 @@ export function refreshTimelineFail(timeline, error, skipLoading) {
     timeline,
     error,
     skipLoading,
-    skipAlert: error.response.status === 404,
+    skipAlert: error.response && error.response.status === 404,
   };
 };
 
diff --git a/app/javascript/mastodon/components/status_list.js b/app/javascript/mastodon/components/status_list.js
index e7b38a07a..59f792920 100644
--- a/app/javascript/mastodon/components/status_list.js
+++ b/app/javascript/mastodon/components/status_list.js
@@ -30,8 +30,8 @@ export default class StatusList extends ImmutablePureComponent {
 
   intersectionObserverWrapper = new IntersectionObserverWrapper();
 
-  handleScroll = debounce((e) => {
-    const { scrollTop, scrollHeight, clientHeight } = e.target;
+  handleScroll = debounce(() => {
+    const { scrollTop, scrollHeight, clientHeight } = this.node;
     const offset = scrollHeight - scrollTop - clientHeight;
     this._oldScrollPosition = scrollHeight - scrollTop;
 
@@ -49,18 +49,22 @@ export default class StatusList extends ImmutablePureComponent {
   componentDidMount () {
     this.attachScrollListener();
     this.attachIntersectionObserver();
+
+    // Handle initial scroll posiiton
+    this.handleScroll();
   }
 
   componentDidUpdate (prevProps) {
     // Reset the scroll position when a new toot comes in in order not to
     // jerk the scrollbar around if you're already scrolled down the page.
-    if (prevProps.statusIds.size < this.props.statusIds.size &&
-        prevProps.statusIds.first() !== this.props.statusIds.first() &&
-        this._oldScrollPosition &&
-        this.node.scrollTop > 0) {
-      let newScrollTop = this.node.scrollHeight - this._oldScrollPosition;
-      if (this.node.scrollTop !== newScrollTop) {
-        this.node.scrollTop = newScrollTop;
+    if (prevProps.statusIds.size < this.props.statusIds.size && this._oldScrollPosition && this.node.scrollTop > 0) {
+      if (prevProps.statusIds.first() !== this.props.statusIds.first()) {
+        let newScrollTop = this.node.scrollHeight - this._oldScrollPosition;
+        if (this.node.scrollTop !== newScrollTop) {
+          this.node.scrollTop = newScrollTop;
+        }
+      } else {
+        this._oldScrollPosition = this.node.scrollHeight - this.node.scrollTop;
       }
     }
   }
diff --git a/app/javascript/mastodon/emoji.js b/app/javascript/mastodon/emoji.js
index 1de41f572..9b58cacf5 100644
--- a/app/javascript/mastodon/emoji.js
+++ b/app/javascript/mastodon/emoji.js
@@ -1,7 +1,7 @@
-import { unicodeToFilename } from './emojione_light';
+import { unicodeMapping } from './emojione_light';
 import Trie from 'substring-trie';
 
-const trie = new Trie(Object.keys(unicodeToFilename));
+const trie = new Trie(Object.keys(unicodeMapping));
 
 function emojify(str) {
   // This walks through the string from start to end, ignoring any tags (<p>, <br>, etc.)
@@ -19,10 +19,10 @@ function emojify(str) {
       insideTag = true;
     } else if (!insideTag && (match = trie.search(str.substring(i)))) {
       const unicodeStr = match;
-      if (unicodeStr in unicodeToFilename) {
-        const filename = unicodeToFilename[unicodeStr];
+      if (unicodeStr in unicodeMapping) {
+        const [filename, shortCode] = unicodeMapping[unicodeStr];
         const alt      = unicodeStr;
-        const replacement =  `<img draggable="false" class="emojione" alt="${alt}" src="/emoji/${filename}.svg" />`;
+        const replacement =  `<img draggable="false" class="emojione" alt="${alt}" title=":${shortCode}:" src="/emoji/${filename}.svg" />`;
         str = str.substring(0, i) + replacement + str.substring(i + unicodeStr.length);
         i += (replacement.length - unicodeStr.length); // jump ahead the length we've added to the string
       }
diff --git a/app/javascript/mastodon/emojione_light.js b/app/javascript/mastodon/emojione_light.js
index c75e10a98..985e9dbcb 100644
--- a/app/javascript/mastodon/emojione_light.js
+++ b/app/javascript/mastodon/emojione_light.js
@@ -5,7 +5,7 @@ const emojione = require('emojione');
 
 const mappedUnicode = emojione.mapUnicodeToShort();
 
-module.exports.unicodeToFilename = Object.keys(emojione.jsEscapeMap)
+module.exports.unicodeMapping = Object.keys(emojione.jsEscapeMap)
   .map(unicodeStr => [unicodeStr, mappedUnicode[emojione.jsEscapeMap[unicodeStr]]])
-  .map(([unicodeStr, shortCode]) => ({ [unicodeStr]: emojione.emojioneList[shortCode].fname }))
+  .map(([unicodeStr, shortCode]) => ({ [unicodeStr]: [emojione.emojioneList[shortCode].fname, shortCode.slice(1, shortCode.length - 1)] }))
   .reduce((x, y) => Object.assign(x, y), { });
diff --git a/app/javascript/mastodon/locales/ja.json b/app/javascript/mastodon/locales/ja.json
index b3943f646..7fe27a092 100644
--- a/app/javascript/mastodon/locales/ja.json
+++ b/app/javascript/mastodon/locales/ja.json
@@ -56,7 +56,7 @@
   "confirmations.mute.confirm": "ミュート",
   "confirmations.mute.message": "本当に{name}をミュートしますか?",
   "confirmations.unfollow.confirm": "フォロー解除",
-  "confirmations.unfollow.message": "本当に{name}のフォローを解除しますか?",
+  "confirmations.unfollow.message": "本当に{name}をフォロー解除しますか?",
   "emoji_button.activity": "活動",
   "emoji_button.flags": "国旗",
   "emoji_button.food": "食べ物",
diff --git a/app/javascript/mastodon/locales/pl.json b/app/javascript/mastodon/locales/pl.json
index 683f589b1..348984648 100644
--- a/app/javascript/mastodon/locales/pl.json
+++ b/app/javascript/mastodon/locales/pl.json
@@ -55,8 +55,8 @@
   "confirmations.domain_block.message": "Czy na pewno chcesz zablokować całą domenę {domain}? Zwykle lepszym rozwiązaniem jest blokada lub wyciszenie kilku użytkowników.",
   "confirmations.mute.confirm": "Wycisz",
   "confirmations.mute.message": "Czy na pewno chcesz wyciszyć {name}?",
-  "confirmations.unfollow.confirm": "Unfollow",
-  "confirmations.unfollow.message": "Are you sure you want to unfollow {name}?",
+  "confirmations.unfollow.confirm": "Przestań śledzić",
+  "confirmations.unfollow.message": "Czy na pewno zamierzasz przestać śledzić {name}?",
   "emoji_button.activity": "Aktywność",
   "emoji_button.flags": "Flagi",
   "emoji_button.food": "Żywność i napoje",
@@ -111,8 +111,8 @@
   "notifications.column_settings.favourite": "Ulubione:",
   "notifications.column_settings.follow": "Nowi śledzący:",
   "notifications.column_settings.mention": "Wspomniali:",
-  "notifications.column_settings.push": "Push notifications",
-  "notifications.column_settings.push_meta": "This device",
+  "notifications.column_settings.push": "Powiadomienia push",
+  "notifications.column_settings.push_meta": "To urządzenie",
   "notifications.column_settings.reblog": "Podbili:",
   "notifications.column_settings.show": "Pokaż w kolumnie",
   "notifications.column_settings.sound": "Odtwarzaj dźwięk",
@@ -125,7 +125,7 @@
   "onboarding.page_one.handle": "Jesteś na domenie {domain}, więc Twój pełny adres to {handle}",
   "onboarding.page_one.welcome": "Witamy w Mastodon!",
   "onboarding.page_six.admin": "Administratorem tej instancji jest {admin}.",
-  "onboarding.page_six.almost_done": "Prawie gotowe...",
+  "onboarding.page_six.almost_done": "Prawie gotowe…",
   "onboarding.page_six.appetoot": "Bon Appetoot!",
   "onboarding.page_six.apps_available": "Są dostępne {apps} dla Androida, iOS i innych platform.",
   "onboarding.page_six.github": "Mastodon jest oprogramowaniem otwartoźródłwym. Możesz zgłaszać błędy, proponować funkcje i pomóc w rozwoju na {github}.",
@@ -151,7 +151,7 @@
   "report.target": "Zgłaszanie {target}",
   "search.placeholder": "Szukaj",
   "search_results.total": "{count, number} {count, plural, one {wynik} more {wyniki}}",
-  "standalone.public_title": "A look inside...",
+  "standalone.public_title": "Spojrzenie wgłąb…",
   "status.cannot_reblog": "Ten post nie może zostać podbity",
   "status.delete": "Usuń",
   "status.favourite": "Ulubione",
@@ -178,7 +178,7 @@
   "upload_area.title": "Przeciągnij i upuść aby wysłać",
   "upload_button.label": "Dodaj zawartość multimedialną",
   "upload_form.undo": "Cofnij",
-  "upload_progress.label": "Wysyłanie...",
+  "upload_progress.label": "Wysyłanie",
   "video_player.expand": "Przełącz wideo",
   "video_player.toggle_sound": "Przełącz dźwięk",
   "video_player.toggle_visible": "Przełącz widoczność",
diff --git a/app/javascript/packs/public.js b/app/javascript/packs/public.js
index 1e89660f2..e34c47fd0 100644
--- a/app/javascript/packs/public.js
+++ b/app/javascript/packs/public.js
@@ -36,7 +36,7 @@ function main() {
 
     [].forEach.call(document.querySelectorAll('time.time-ago'), (content) => {
       const datetime = new Date(content.getAttribute('datetime'));
-      content.textContent = relativeFormat.format(datetime);;
+      content.textContent = relativeFormat.format(datetime);
     });
   });
 
diff --git a/app/javascript/styles/components.scss b/app/javascript/styles/components.scss
index 0a8fa5e6d..0cd082985 100644
--- a/app/javascript/styles/components.scss
+++ b/app/javascript/styles/components.scss
@@ -4091,6 +4091,10 @@ button.icon-button.active i.fa-retweet {
   }
 }
 
+::-webkit-scrollbar-thumb {
+  border-radius: 0;
+}
+
 noscript {
   text-align: center;
 
diff --git a/app/lib/exceptions.rb b/app/lib/exceptions.rb
index 9bc802c12..34d84a34f 100644
--- a/app/lib/exceptions.rb
+++ b/app/lib/exceptions.rb
@@ -5,4 +5,14 @@ module Mastodon
   class NotPermittedError < Error; end
   class ValidationError < Error; end
   class RaceConditionError < Error; end
+
+  class UnexpectedResponseError < Error
+    def initialize(response = nil)
+      @response = response
+    end
+
+    def to_s
+      "#{@response.uri} returned code #{@response.code}"
+    end
+  end
 end
diff --git a/app/lib/ostatus/activity/base.rb b/app/lib/ostatus/activity/base.rb
index f528815b3..e1477f0eb 100644
--- a/app/lib/ostatus/activity/base.rb
+++ b/app/lib/ostatus/activity/base.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Ostatus::Activity::Base
+class OStatus::Activity::Base
   def initialize(xml, account = nil)
     @xml = xml
     @account = account
diff --git a/app/lib/ostatus/activity/creation.rb b/app/lib/ostatus/activity/creation.rb
index c54d64fd7..e22f746f2 100644
--- a/app/lib/ostatus/activity/creation.rb
+++ b/app/lib/ostatus/activity/creation.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Ostatus::Activity::Creation < Ostatus::Activity::Base
+class OStatus::Activity::Creation < OStatus::Activity::Base
   def perform
     if redis.exists("delete_upon_arrival:#{@account.id}:#{id}")
       Rails.logger.debug "Delete for status #{id} was queued, ignoring"
diff --git a/app/lib/ostatus/activity/deletion.rb b/app/lib/ostatus/activity/deletion.rb
index c4d05a467..860faf501 100644
--- a/app/lib/ostatus/activity/deletion.rb
+++ b/app/lib/ostatus/activity/deletion.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Ostatus::Activity::Deletion < Ostatus::Activity::Base
+class OStatus::Activity::Deletion < OStatus::Activity::Base
   def perform
     Rails.logger.debug "Deleting remote status #{id}"
     status = Status.find_by(uri: id, account: @account)
diff --git a/app/lib/ostatus/activity/general.rb b/app/lib/ostatus/activity/general.rb
index 3ff7a039a..b3bef9861 100644
--- a/app/lib/ostatus/activity/general.rb
+++ b/app/lib/ostatus/activity/general.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Ostatus::Activity::General < Ostatus::Activity::Base
+class OStatus::Activity::General < OStatus::Activity::Base
   def specialize
     special_class&.new(@xml, @account)
   end
@@ -10,11 +10,11 @@ class Ostatus::Activity::General < Ostatus::Activity::Base
   def special_class
     case verb
     when :post
-      Ostatus::Activity::Post
+      OStatus::Activity::Post
     when :share
-      Ostatus::Activity::Share
+      OStatus::Activity::Share
     when :delete
-      Ostatus::Activity::Deletion
+      OStatus::Activity::Deletion
     end
   end
 end
diff --git a/app/lib/ostatus/activity/post.rb b/app/lib/ostatus/activity/post.rb
index 8028db2f8..755ed8656 100644
--- a/app/lib/ostatus/activity/post.rb
+++ b/app/lib/ostatus/activity/post.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Ostatus::Activity::Post < Ostatus::Activity::Creation
+class OStatus::Activity::Post < OStatus::Activity::Creation
   def perform
     status, just_created = super
 
diff --git a/app/lib/ostatus/activity/remote.rb b/app/lib/ostatus/activity/remote.rb
index 755f885e6..ecec6886c 100644
--- a/app/lib/ostatus/activity/remote.rb
+++ b/app/lib/ostatus/activity/remote.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Ostatus::Activity::Remote < Ostatus::Activity::Base
+class OStatus::Activity::Remote < OStatus::Activity::Base
   def perform
     find_status(id) || FetchRemoteStatusService.new.call(url)
   end
diff --git a/app/lib/ostatus/activity/share.rb b/app/lib/ostatus/activity/share.rb
index 73aac58ed..290008021 100644
--- a/app/lib/ostatus/activity/share.rb
+++ b/app/lib/ostatus/activity/share.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Ostatus::Activity::Share < Ostatus::Activity::Creation
+class OStatus::Activity::Share < OStatus::Activity::Creation
   def perform
     return if reblog.nil?
 
@@ -18,7 +18,7 @@ class Ostatus::Activity::Share < Ostatus::Activity::Creation
   def reblog
     return @reblog if defined? @reblog
 
-    original_status = Ostatus::Activity::Remote.new(object).perform
+    original_status = OStatus::Activity::Remote.new(object).perform
     return if original_status.nil?
 
     @reblog = original_status.reblog? ? original_status.reblog : original_status
diff --git a/app/lib/ostatus/atom_serializer.rb b/app/lib/ostatus/atom_serializer.rb
index 909d84df3..0d62361be 100644
--- a/app/lib/ostatus/atom_serializer.rb
+++ b/app/lib/ostatus/atom_serializer.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Ostatus::AtomSerializer
+class OStatus::AtomSerializer
   include RoutingHelper
   include ActionView::Helpers::SanitizeHelper
 
diff --git a/app/models/account.rb b/app/models/account.rb
index 9f8e22adf..46cc84746 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -36,6 +36,11 @@
 #  followers_count         :integer          default(0), not null
 #  following_count         :integer          default(0), not null
 #  last_webfingered_at     :datetime
+#  inbox_url               :string           default(""), not null
+#  outbox_url              :string           default(""), not null
+#  shared_inbox_url        :string           default(""), not null
+#  followers_url           :string           default(""), not null
+#  protocol                :integer          default("ostatus"), not null
 #
 
 class Account < ApplicationRecord
@@ -49,6 +54,8 @@ class Account < ApplicationRecord
   include Remotable
   include EmojiHelper
 
+  enum protocol: [:ostatus, :activitypub]
+
   # Local users
   has_one :user, inverse_of: :account
 
diff --git a/app/models/web/push_subscription.rb b/app/models/web/push_subscription.rb
index baf6a1ece..86df9b591 100644
--- a/app/models/web/push_subscription.rb
+++ b/app/models/web/push_subscription.rb
@@ -26,8 +26,6 @@ class Web::PushSubscription < ApplicationRecord
   before_create :send_welcome_notification
 
   def push(notification)
-    return unless pushable? notification
-
     name = display_name notification.from_account
     title = title_str(name, notification)
     body = body_str notification
@@ -45,7 +43,7 @@ class Web::PushSubscription < ApplicationRecord
         title: title,
         dir: dir,
         image: image,
-        badge: full_asset_url('badge.png'),
+        badge: full_asset_url('badge.png', skip_pipeline: true),
         tag: notification.id,
         timestamp: notification.created_at,
         icon: notification.from_account.avatar_static_url,
@@ -69,6 +67,10 @@ class Web::PushSubscription < ApplicationRecord
     )
   end
 
+  def pushable?(notification)
+    data && data.key?('alerts') && data['alerts'][notification.type.to_s]
+  end
+
   def as_payload
     payload = {
       id: id,
@@ -115,7 +117,7 @@ class Web::PushSubscription < ApplicationRecord
       when :mention then [
         {
           title: translate('push_notifications.mention.action_favourite'),
-          icon: full_asset_url('emoji/2764.png'),
+          icon: full_asset_url('emoji/2764.png', skip_pipeline: true),
           todo: 'request',
           method: 'POST',
           action: "/api/v1/statuses/#{notification.target_status.id}/favourite",
@@ -148,16 +150,12 @@ class Web::PushSubscription < ApplicationRecord
     rtl?(body) ? 'rtl' : 'ltr'
   end
 
-  def pushable?(notification)
-    data && data.key?('alerts') && data['alerts'][notification.type.to_s]
-  end
-
   def send_welcome_notification
     Webpush.payload_send(
       message: JSON.generate(
         title: translate('push_notifications.subscribed.title'),
-        icon: full_asset_url('android-chrome-192x192.png'),
-        badge: full_asset_url('badge.png'),
+        icon: full_asset_url('android-chrome-192x192.png', skip_pipeline: true),
+        badge: full_asset_url('badge.png', skip_pipeline: true),
         data: {
           content: translate('push_notifications.subscribed.body'),
           actions: [],
diff --git a/app/services/authorize_follow_service.rb b/app/services/authorize_follow_service.rb
index a25d11dbd..41815a393 100644
--- a/app/services/authorize_follow_service.rb
+++ b/app/services/authorize_follow_service.rb
@@ -10,6 +10,6 @@ class AuthorizeFollowService < BaseService
   private
 
   def build_xml(follow_request)
-    Ostatus::AtomSerializer.render(Ostatus::AtomSerializer.new.authorize_follow_request_salmon(follow_request))
+    OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.authorize_follow_request_salmon(follow_request))
   end
 end
diff --git a/app/services/block_service.rb b/app/services/block_service.rb
index 15420e192..5d7bf6a3b 100644
--- a/app/services/block_service.rb
+++ b/app/services/block_service.rb
@@ -18,6 +18,6 @@ class BlockService < BaseService
   private
 
   def build_xml(block)
-    Ostatus::AtomSerializer.render(Ostatus::AtomSerializer.new.block_salmon(block))
+    OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.block_salmon(block))
   end
 end
diff --git a/app/services/concerns/stream_entry_renderer.rb b/app/services/concerns/stream_entry_renderer.rb
index d9c30c53c..9f6c8a082 100644
--- a/app/services/concerns/stream_entry_renderer.rb
+++ b/app/services/concerns/stream_entry_renderer.rb
@@ -2,6 +2,6 @@
 
 module StreamEntryRenderer
   def stream_entry_to_xml(stream_entry)
-    Ostatus::AtomSerializer.render(Ostatus::AtomSerializer.new.entry(stream_entry, true))
+    OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.entry(stream_entry, true))
   end
 end
diff --git a/app/services/favourite_service.rb b/app/services/favourite_service.rb
index a08aba638..291f9e56e 100644
--- a/app/services/favourite_service.rb
+++ b/app/services/favourite_service.rb
@@ -28,6 +28,6 @@ class FavouriteService < BaseService
   private
 
   def build_xml(favourite)
-    Ostatus::AtomSerializer.render(Ostatus::AtomSerializer.new.favourite_salmon(favourite))
+    OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.favourite_salmon(favourite))
   end
 end
diff --git a/app/services/fetch_remote_account_service.rb b/app/services/fetch_remote_account_service.rb
index 1efac365b..8eed0d454 100644
--- a/app/services/fetch_remote_account_service.rb
+++ b/app/services/fetch_remote_account_service.rb
@@ -32,8 +32,5 @@ class FetchRemoteAccountService < BaseService
   rescue Nokogiri::XML::XPath::SyntaxError
     Rails.logger.debug 'Invalid XML or missing namespace'
     nil
-  rescue Goldfinger::NotFoundError, Goldfinger::Error
-    Rails.logger.debug 'Exceptions related to Goldfinger occurs'
-    nil
   end
 end
diff --git a/app/services/fetch_remote_status_service.rb b/app/services/fetch_remote_status_service.rb
index 6ac31e4d8..b9f5f97b1 100644
--- a/app/services/fetch_remote_status_service.rb
+++ b/app/services/fetch_remote_status_service.rb
@@ -33,9 +33,6 @@ class FetchRemoteStatusService < BaseService
   rescue Nokogiri::XML::XPath::SyntaxError
     Rails.logger.debug 'Invalid XML or missing namespace'
     nil
-  rescue Goldfinger::NotFoundError, Goldfinger::Error
-    Rails.logger.debug 'Exceptions related to Goldfinger occurs'
-    nil
   end
 
   def confirmed_domain?(domain, account)
diff --git a/app/services/follow_service.rb b/app/services/follow_service.rb
index 7a7275b6e..3155feaa4 100644
--- a/app/services/follow_service.rb
+++ b/app/services/follow_service.rb
@@ -57,10 +57,10 @@ class FollowService < BaseService
   end
 
   def build_follow_request_xml(follow_request)
-    Ostatus::AtomSerializer.render(Ostatus::AtomSerializer.new.follow_request_salmon(follow_request))
+    OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.follow_request_salmon(follow_request))
   end
 
   def build_follow_xml(follow)
-    Ostatus::AtomSerializer.render(Ostatus::AtomSerializer.new.follow_salmon(follow))
+    OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.follow_salmon(follow))
   end
 end
diff --git a/app/services/notify_service.rb b/app/services/notify_service.rb
index c7d8ad50a..a44df5180 100644
--- a/app/services/notify_service.rb
+++ b/app/services/notify_service.rb
@@ -65,7 +65,12 @@ class NotifyService < BaseService
   end
 
   def send_push_notifications
-    sessions_with_subscriptions_ids = @recipient.user.session_activations.where.not(web_push_subscription: nil).pluck(:id)
+    # HACK: Can be caused by quickly unfavouriting a status, since creating
+    # a favourite and creating a notification are not wrapped in a transaction.
+    return if @notification.activity.nil?
+
+    sessions_with_subscriptions = @recipient.user.session_activations.where.not(web_push_subscription: nil)
+    sessions_with_subscriptions_ids = sessions_with_subscriptions.select { |session| session.web_push_subscription.pushable? @notification }.map(&:id)
 
     WebPushNotificationWorker.push_bulk(sessions_with_subscriptions_ids) do |session_activation_id|
       [session_activation_id, @notification.id]
diff --git a/app/services/process_feed_service.rb b/app/services/process_feed_service.rb
index b99048a06..31191a818 100644
--- a/app/services/process_feed_service.rb
+++ b/app/services/process_feed_service.rb
@@ -20,10 +20,10 @@ class ProcessFeedService < BaseService
   end
 
   def process_entry(xml, account)
-    activity = Ostatus::Activity::General.new(xml, account)
+    activity = OStatus::Activity::General.new(xml, account)
     activity.specialize&.perform if activity.status?
   rescue ActiveRecord::RecordInvalid => e
-    Rails.logger.debug "Nothing was saved for #{id} because: #{e}"
+    Rails.logger.debug "Nothing was saved for #{activity.id} because: #{e}"
     nil
   end
 end
diff --git a/app/services/process_interaction_service.rb b/app/services/process_interaction_service.rb
index 584a109ad..cc99cde03 100644
--- a/app/services/process_interaction_service.rb
+++ b/app/services/process_interaction_service.rb
@@ -47,7 +47,7 @@ class ProcessInteractionService < BaseService
         reflect_unblock!(account, target_account)
       end
     end
-  rescue Goldfinger::Error, HTTP::Error, OStatus2::BadSalmonError, Mastodon::NotPermittedError
+  rescue HTTP::Error, OStatus2::BadSalmonError, Mastodon::NotPermittedError
     nil
   end
 
diff --git a/app/services/reject_follow_service.rb b/app/services/reject_follow_service.rb
index 87fc49b34..fd7e66c23 100644
--- a/app/services/reject_follow_service.rb
+++ b/app/services/reject_follow_service.rb
@@ -10,6 +10,6 @@ class RejectFollowService < BaseService
   private
 
   def build_xml(follow_request)
-    Ostatus::AtomSerializer.render(Ostatus::AtomSerializer.new.reject_follow_request_salmon(follow_request))
+    OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.reject_follow_request_salmon(follow_request))
   end
 end
diff --git a/app/services/resolve_remote_account_service.rb b/app/services/resolve_remote_account_service.rb
index d2dfda824..e0e2ebc83 100644
--- a/app/services/resolve_remote_account_service.rb
+++ b/app/services/resolve_remote_account_service.rb
@@ -11,97 +11,154 @@ class ResolveRemoteAccountService < BaseService
   # @param [String] uri User URI in the form of username@domain
   # @return [Account]
   def call(uri, update_profile = true, redirected = nil)
-    username, domain = uri.split('@')
+    @username, @domain = uri.split('@')
 
-    return Account.find_local(username) if TagManager.instance.local_domain?(domain)
+    return Account.find_local(@username) if TagManager.instance.local_domain?(@domain)
 
-    account = Account.find_remote(username, domain)
-    return account unless account_needs_webfinger_update?(account)
+    @account = Account.find_remote(@username, @domain)
 
-    Rails.logger.debug "Looking up webfinger for #{uri}"
+    return @account unless webfinger_update_due?
 
-    data = Goldfinger.finger("acct:#{uri}")
+    Rails.logger.debug "Looking up webfinger for #{uri}"
 
-    raise Goldfinger::Error, 'Missing resource links' if data.link('http://schemas.google.com/g/2010#updates-from').nil? || data.link('salmon').nil? || data.link('http://webfinger.net/rel/profile-page').nil? || data.link('magic-public-key').nil?
+    @webfinger = Goldfinger.finger("acct:#{uri}")
 
-    # Disallow account hijacking
-    confirmed_username, confirmed_domain = data.subject.gsub(/\Aacct:/, '').split('@')
+    confirmed_username, confirmed_domain = @webfinger.subject.gsub(/\Aacct:/, '').split('@')
 
-    unless confirmed_username.casecmp(username).zero? && confirmed_domain.casecmp(domain).zero?
-      return call("#{confirmed_username}@#{confirmed_domain}", update_profile, true) if redirected.nil?
-      raise Goldfinger::Error, 'Requested and returned acct URI do not match'
+    if confirmed_username.casecmp(@username).zero? && confirmed_domain.casecmp(@domain).zero?
+      @username = confirmed_username
+      @domain   = confirmed_domain
+    elsif redirected.nil?
+      return call("#{confirmed_username}@#{confirmed_domain}", update_profile, true)
+    else
+      Rails.logger.debug 'Requested and returned acct URIs do not match'
+      return
     end
 
-    return Account.find_local(confirmed_username) if TagManager.instance.local_domain?(confirmed_domain)
+    return if links_missing?
+    return Account.find_local(@username) if TagManager.instance.local_domain?(@domain)
 
-    confirmed_account = Account.find_remote(confirmed_username, confirmed_domain)
-    if confirmed_account.nil?
-      Rails.logger.debug "Creating new remote account for #{uri}"
+    RedisLock.acquire(lock_options) do |lock|
+      if lock.acquired?
+        @account = Account.find_remote(@username, @domain)
 
-      domain_block = DomainBlock.find_by(domain: domain)
-      account = Account.new(username: confirmed_username, domain: confirmed_domain)
-      account.suspended   = true if domain_block && domain_block.suspend?
-      account.silenced    = true if domain_block && domain_block.silence?
-      account.private_key = nil
-    else
-      account = confirmed_account
+        create_account if @account.nil?
+        update_account
+
+        update_account_profile if update_profile
+      end
     end
 
-    account.last_webfingered_at = Time.now.utc
+    @account
+  rescue Goldfinger::Error => e
+    Rails.logger.debug "Webfinger query for #{uri} unsuccessful: #{e}"
+    nil
+  end
 
-    account.remote_url  = data.link('http://schemas.google.com/g/2010#updates-from').href
-    account.salmon_url  = data.link('salmon').href
-    account.url         = data.link('http://webfinger.net/rel/profile-page').href
-    account.public_key  = magic_key_to_pem(data.link('magic-public-key').href)
+  private
 
-    body, xml = get_feed(account.remote_url)
-    hubs      = get_hubs(xml)
+  def links_missing?
+    @webfinger.link('http://schemas.google.com/g/2010#updates-from').nil? ||
+      @webfinger.link('salmon').nil? ||
+      @webfinger.link('http://webfinger.net/rel/profile-page').nil? ||
+      @webfinger.link('magic-public-key').nil? ||
+      canonical_uri.nil? ||
+      hub_url.nil?
+  end
 
-    account.uri     = get_account_uri(xml)
-    account.hub_url = hubs.first.attribute('href').value
+  def webfinger_update_due?
+    @account.nil? || @account.last_webfingered_at.nil? || @account.last_webfingered_at <= 1.day.ago
+  end
 
-    begin
-      account.save!
-      get_profile(body, account) if update_profile
-    rescue ActiveRecord::RecordNotUnique
-      # The account has been added by another worker!
-      return Account.find_remote(confirmed_username, confirmed_domain)
-    end
+  def create_account
+    Rails.logger.debug "Creating new remote account for #{@username}@#{@domain}"
 
-    account
+    @account = Account.new(username: @username, domain: @domain)
+    @account.suspended   = true if auto_suspend?
+    @account.silenced    = true if auto_silence?
+    @account.private_key = nil
   end
 
-  private
+  def update_account
+    @account.last_webfingered_at = Time.now.utc
+    @account.remote_url          = atom_url
+    @account.salmon_url          = salmon_url
+    @account.url                 = url
+    @account.public_key          = public_key
+    @account.uri                 = canonical_uri
+    @account.hub_url             = hub_url
+    @account.save!
+  end
+
+  def auto_suspend?
+    domain_block && domain_block.suspend?
+  end
+
+  def auto_silence?
+    domain_block && domain_block.silence?
+  end
 
-  def account_needs_webfinger_update?(account)
-    account&.last_webfingered_at.nil? || account.last_webfingered_at <= 1.day.ago
+  def domain_block
+    return @domain_block if defined?(@domain_block)
+    @domain_block = DomainBlock.find_by(domain: @domain)
   end
 
-  def get_feed(url)
-    response = Request.new(:get, url).perform
-    raise Goldfinger::Error, "Feed attempt failed for #{url}: HTTP #{response.code}" unless response.code == 200
-    [response.to_s, Nokogiri::XML(response)]
+  def atom_url
+    @atom_url ||= @webfinger.link('http://schemas.google.com/g/2010#updates-from').href
   end
 
-  def get_hubs(xml)
-    hubs = xml.xpath('//xmlns:link[@rel="hub"]')
-    raise Goldfinger::Error, 'No PubSubHubbub hubs found' if hubs.empty? || hubs.first.attribute('href').nil?
-    hubs
+  def salmon_url
+    @salmon_url ||= @webfinger.link('salmon').href
   end
 
-  def get_account_uri(xml)
-    author_uri = xml.at_xpath('/xmlns:feed/xmlns:author/xmlns:uri')
+  def url
+    @url ||= @webfinger.link('http://webfinger.net/rel/profile-page').href
+  end
+
+  def public_key
+    @public_key ||= magic_key_to_pem(@webfinger.link('magic-public-key').href)
+  end
+
+  def canonical_uri
+    return @canonical_uri if defined?(@canonical_uri)
+
+    author_uri = atom.at_xpath('/xmlns:feed/xmlns:author/xmlns:uri')
 
     if author_uri.nil?
-      owner = xml.at_xpath('/xmlns:feed').at_xpath('./dfrn:owner', dfrn: DFRN_NS)
+      owner      = atom.at_xpath('/xmlns:feed').at_xpath('./dfrn:owner', dfrn: DFRN_NS)
       author_uri = owner.at_xpath('./xmlns:uri') unless owner.nil?
     end
 
-    raise Goldfinger::Error, 'Author URI could not be found' if author_uri.nil?
-    author_uri.content
+    @canonical_uri = author_uri.nil? ? nil : author_uri.content
+  end
+
+  def hub_url
+    return @hub_url if defined?(@hub_url)
+
+    hubs     = atom.xpath('//xmlns:link[@rel="hub"]')
+    @hub_url = hubs.empty? || hubs.first['href'].nil? ? nil : hubs.first['href']
+  end
+
+  def atom_body
+    return @atom_body if defined?(@atom_body)
+
+    response = Request.new(:get, atom_url).perform
+
+    raise Mastodon::UnexpectedResponseError, response unless response.code == 200
+
+    @atom_body = response.to_s
+  end
+
+  def atom
+    return @atom if defined?(@atom)
+    @atom = Nokogiri::XML(atom_body)
+  end
+
+  def update_account_profile
+    RemoteProfileUpdateWorker.perform_async(@account.id, atom_body.force_encoding('UTF-8'), false)
   end
 
-  def get_profile(body, account)
-    RemoteProfileUpdateWorker.perform_async(account.id, body.force_encoding('UTF-8'), false)
+  def lock_options
+    { redis: Redis.current, key: "resolve:#{@username}@#{@domain}" }
   end
 end
diff --git a/app/services/send_interaction_service.rb b/app/services/send_interaction_service.rb
index ef38a748b..c11813abc 100644
--- a/app/services/send_interaction_service.rb
+++ b/app/services/send_interaction_service.rb
@@ -10,11 +10,11 @@ class SendInteractionService < BaseService
     @source_account = source_account
     @target_account = target_account
 
-    return if block_notification?
+    return if !target_account.ostatus? || block_notification?
 
     delivery = build_request.perform
 
-    raise "Delivery failed for #{target_account.salmon_url}: HTTP #{delivery.code}" unless delivery.code > 199 && delivery.code < 300
+    raise Mastodon::UnexpectedResponseError, delivery unless delivery.code > 199 && delivery.code < 300
   end
 
   private
diff --git a/app/services/subscribe_service.rb b/app/services/subscribe_service.rb
index f58067038..d3e41e691 100644
--- a/app/services/subscribe_service.rb
+++ b/app/services/subscribe_service.rb
@@ -2,6 +2,8 @@
 
 class SubscribeService < BaseService
   def call(account)
+    return unless account.ostatus?
+
     @account        = account
     @account.secret = SecureRandom.hex
     @response       = build_request.perform
@@ -16,7 +18,7 @@ class SubscribeService < BaseService
     else
       # The response was either a 429 rate limit, or a 5xx error.
       # We need to retry at a later time. Fail loudly!
-      raise "Subscription attempt failed for #{@account.acct} (#{@account.hub_url}): HTTP #{@response.code}"
+      raise Mastodon::UnexpectedResponseError, @response
     end
   end
 
diff --git a/app/services/unblock_service.rb b/app/services/unblock_service.rb
index 50c2dc2f0..ff15c7275 100644
--- a/app/services/unblock_service.rb
+++ b/app/services/unblock_service.rb
@@ -11,6 +11,6 @@ class UnblockService < BaseService
   private
 
   def build_xml(block)
-    Ostatus::AtomSerializer.render(Ostatus::AtomSerializer.new.unblock_salmon(block))
+    OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.unblock_salmon(block))
   end
 end
diff --git a/app/services/unfavourite_service.rb b/app/services/unfavourite_service.rb
index ede3caad1..564aaee46 100644
--- a/app/services/unfavourite_service.rb
+++ b/app/services/unfavourite_service.rb
@@ -13,6 +13,6 @@ class UnfavouriteService < BaseService
   private
 
   def build_xml(favourite)
-    Ostatus::AtomSerializer.render(Ostatus::AtomSerializer.new.unfavourite_salmon(favourite))
+    OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.unfavourite_salmon(favourite))
   end
 end
diff --git a/app/services/unfollow_service.rb b/app/services/unfollow_service.rb
index 0c9a5f657..388909586 100644
--- a/app/services/unfollow_service.rb
+++ b/app/services/unfollow_service.rb
@@ -14,6 +14,6 @@ class UnfollowService < BaseService
   private
 
   def build_xml(follow)
-    Ostatus::AtomSerializer.render(Ostatus::AtomSerializer.new.unfollow_salmon(follow))
+    OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.unfollow_salmon(follow))
   end
 end
diff --git a/app/services/unsubscribe_service.rb b/app/services/unsubscribe_service.rb
index c2f022d7d..c5e0e73fe 100644
--- a/app/services/unsubscribe_service.rb
+++ b/app/services/unsubscribe_service.rb
@@ -2,6 +2,8 @@
 
 class UnsubscribeService < BaseService
   def call(account)
+    return unless account.ostatus?
+
     @account  = account
     @response = build_request.perform
 
diff --git a/app/views/auth/registrations/_sessions.html.haml b/app/views/auth/registrations/_sessions.html.haml
index 4521aad0a..84207862a 100644
--- a/app/views/auth/registrations/_sessions.html.haml
+++ b/app/views/auth/registrations/_sessions.html.haml
@@ -7,6 +7,7 @@
       %th= t 'sessions.browser'
       %th= t 'sessions.ip'
       %th= t 'sessions.activity'
+      %td
   %tbody
     - @sessions.each do |session|
       %tr
@@ -22,3 +23,6 @@
             = t 'sessions.current_session'
           - else
             %time.time-ago{ datetime: session.updated_at.iso8601, title: l(session.updated_at) }= l(session.updated_at)
+        %td
+          - if request.session['auth_id'] != session.session_id
+            = table_link_to 'times', t('sessions.revoke'), settings_session_path(session), method: :delete
diff --git a/app/workers/import_worker.rb b/app/workers/import_worker.rb
index 90a226206..27cc6b365 100644
--- a/app/workers/import_worker.rb
+++ b/app/workers/import_worker.rb
@@ -44,7 +44,7 @@ class ImportWorker
         target_account = ResolveRemoteAccountService.new.call(row.first)
         next if target_account.nil?
         MuteService.new.call(from_account, target_account)
-      rescue Goldfinger::Error, HTTP::Error, OpenSSL::SSL::SSLError
+      rescue Mastodon::UnexpectedResponseError, HTTP::Error, OpenSSL::SSL::SSLError
         next
       end
     end
@@ -56,7 +56,7 @@ class ImportWorker
         target_account = ResolveRemoteAccountService.new.call(row.first)
         next if target_account.nil?
         BlockService.new.call(from_account, target_account)
-      rescue Goldfinger::Error, HTTP::Error, OpenSSL::SSL::SSLError
+      rescue Mastodon::UnexpectedResponseError, HTTP::Error, OpenSSL::SSL::SSLError
         next
       end
     end
@@ -66,7 +66,7 @@ class ImportWorker
     import_rows.each do |row|
       begin
         FollowService.new.call(from_account, row.first)
-      rescue Mastodon::NotPermittedError, ActiveRecord::RecordNotFound, Goldfinger::Error, HTTP::Error, OpenSSL::SSL::SSLError
+      rescue Mastodon::NotPermittedError, ActiveRecord::RecordNotFound, Mastodon::UnexpectedResponseError, HTTP::Error, OpenSSL::SSL::SSLError
         next
       end
     end
diff --git a/app/workers/pubsubhubbub/delivery_worker.rb b/app/workers/pubsubhubbub/delivery_worker.rb
index 2e1101b93..035a59048 100644
--- a/app/workers/pubsubhubbub/delivery_worker.rb
+++ b/app/workers/pubsubhubbub/delivery_worker.rb
@@ -23,7 +23,7 @@ class Pubsubhubbub::DeliveryWorker
   def process_delivery
     payload_delivery
 
-    raise "Delivery failed for #{subscription.callback_url}: HTTP #{payload_delivery.code}" unless response_successful?
+    raise Mastodon::UnexpectedResponseError, payload_delivery unless response_successful?
 
     subscription.touch(:last_successful_delivery_at)
   end
diff --git a/app/workers/pubsubhubbub/distribution_worker.rb b/app/workers/pubsubhubbub/distribution_worker.rb
index 9c1fa76cb..ce467d18b 100644
--- a/app/workers/pubsubhubbub/distribution_worker.rb
+++ b/app/workers/pubsubhubbub/distribution_worker.rb
@@ -22,7 +22,7 @@ class Pubsubhubbub::DistributionWorker
   def distribute_public!(stream_entries)
     return if stream_entries.empty?
 
-    @payload = Ostatus::AtomSerializer.render(Ostatus::AtomSerializer.new.feed(@account, stream_entries))
+    @payload = OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.feed(@account, stream_entries))
 
     Pubsubhubbub::DeliveryWorker.push_bulk(@subscriptions) do |subscription|
       [subscription.id, @payload]
@@ -32,7 +32,7 @@ class Pubsubhubbub::DistributionWorker
   def distribute_hidden!(stream_entries)
     return if stream_entries.empty?
 
-    @payload = Ostatus::AtomSerializer.render(Ostatus::AtomSerializer.new.feed(@account, stream_entries))
+    @payload = OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.feed(@account, stream_entries))
     @domains = @account.followers.domains
 
     Pubsubhubbub::DeliveryWorker.push_bulk(@subscriptions.reject { |s| !allowed_to_receive?(s.callback_url, s.domain) }) do |subscription|