diff --git a/playbook.yaml b/playbook.yaml
index 44a0285..96515ca 100644
--- a/playbook.yaml
+++ b/playbook.yaml
@@ -4,6 +4,7 @@
 - name: "use toolbox"
   hosts: "all"
   become: true
+  serial: 1
   tasks:
 
     # due to semaphore bug we need to do this ourselves