diff --git a/app/services/backup_service.rb b/app/services/backup_service.rb
index cc86af000..e0e27f9f4 100644
--- a/app/services/backup_service.rb
+++ b/app/services/backup_service.rb
@@ -55,6 +55,7 @@ class BackupService < BaseService
   def build_archive!
     tmp_file = Tempfile.new(%w(archive .zip))
 
+    Zip.write_zip64_support = true
     Zip::File.open(tmp_file, create: true) do |zipfile|
       dump_outbox!(zipfile)
       dump_media_attachments!(zipfile)