diff --git a/manifest.yml b/manifest.yml
index c75fb8ea1..f34074d39 100644
--- a/manifest.yml
+++ b/manifest.yml
@@ -31,7 +31,7 @@ applications:
         instances: 4
         memory: 1G
       - type: worker
-        command: bundle exec sidekiq -3
+        command: bundle exec sidekiq -t 3
         health-check-type: process
         instances: 2
     env: