diff --git a/metadata/service/control/single.yml b/metadata/service/control/single.yml
index 1f45b14..b4add44 100644
--- a/metadata/service/control/single.yml
+++ b/metadata/service/control/single.yml
@@ -18,6 +18,7 @@
       cpu_allocation_ratio: 16.0
       ram_allocation_ratio: 1.5
       disk_allocation_ratio: 1.0
+      workers: 1
       logging:
       - engine: syslog
         facility: local0