diff --git a/app/services/block_domain_service.rb b/app/services/block_domain_service.rb
index eefdc0dbf9..d082de40b9 100644
--- a/app/services/block_domain_service.rb
+++ b/app/services/block_domain_service.rb
@@ -5,13 +5,14 @@ class BlockDomainService < BaseService
 
   def call(domain_block)
     @domain_block = domain_block
-    process_domain_block
+    process_domain_block!
   end
 
   private
 
-  def process_domain_block
+  def process_domain_block!
     clear_media! if domain_block.reject_media?
+
     if domain_block.silence?
       silence_accounts!
     elsif domain_block.suspend?
@@ -19,14 +20,26 @@ class BlockDomainService < BaseService
     end
   end
 
+  def invalidate_association_caches!
+    # Normally, associated models of a status are immutable (except for accounts)
+    # so they are aggressively cached. After updating the media attachments to no
+    # longer point to a local file, we need to clear the cache to make those
+    # changes appear in the API and UI
+    @affected_status_ids.each { |id| Rails.cache.delete_matched("statuses/#{id}-*") }
+  end
+
   def silence_accounts!
     blocked_domain_accounts.in_batches.update_all(silenced: true)
   end
 
   def clear_media!
-    clear_account_images
-    clear_account_attachments
-    clear_emojos
+    @affected_status_ids = []
+
+    clear_account_images!
+    clear_account_attachments!
+    clear_emojos!
+
+    invalidate_association_caches!
   end
 
   def suspend_accounts!
@@ -36,23 +49,25 @@ class BlockDomainService < BaseService
     end
   end
 
-  def clear_account_images
+  def clear_account_images!
     blocked_domain_accounts.find_each do |account|
-      account.avatar.destroy
-      account.header.destroy
+      account.avatar.destroy if account.avatar.exists?
+      account.header.destroy if account.header.exists?
       account.save
     end
   end
 
-  def clear_account_attachments
+  def clear_account_attachments!
     media_from_blocked_domain.find_each do |attachment|
-      attachment.file.destroy
+      @affected_status_ids << attachment.status_id if attachment.status_id.present?
+
+      attachment.file.destroy if attachment.file.exists?
       attachment.type = :unknown
       attachment.save
     end
   end
 
-  def clear_emojos
+  def clear_emojos!
     emojis_from_blocked_domains.destroy_all
   end
 
diff --git a/lib/tasks/mastodon.rake b/lib/tasks/mastodon.rake
index 9202b4839c..0b011bf57f 100644
--- a/lib/tasks/mastodon.rake
+++ b/lib/tasks/mastodon.rake
@@ -476,10 +476,10 @@ namespace :mastodon do
       time_ago = ENV.fetch('NUM_DAYS') { 7 }.to_i.days.ago
 
       MediaAttachment.where.not(remote_url: '').where.not(file_file_name: nil).where('created_at < ?', time_ago).find_each do |media|
-        if media.file.exists?
-          media.file.destroy
-          media.save
-        end
+        next unless media.file.exists?
+
+        media.file.destroy
+        media.save
       end
     end