diff --git a/app/models/event.rb b/app/models/event.rb
index 0b06527..984029f 100644
--- a/app/models/event.rb
+++ b/app/models/event.rb
@@ -156,10 +156,9 @@ def reindex_touched_dois(start_date:, end_date:, threads: 10)
           .distinct.pluck(:target_doi)
           .each { |doi| dois << doi }
 
-        # Test performance before enabling SQS queues.
-        # Parallel.each(dois.to_a, in_threads: threads) do |doi|
-        #   SqsUtilities.send_events_doi_index_message(doi)
-        # end
+        Parallel.each(dois, in_threads: threads) do |doi|
+          SqsUtilities.send_events_doi_index_message({ doi: doi })
+        end
 
         total += dois.size
       end