diff --git a/concourse/pipeline.yml b/concourse/pipeline.yml
index 9b2836fcf..0437397d6 100644
--- a/concourse/pipeline.yml
+++ b/concourse/pipeline.yml
@@ -104,6 +104,7 @@ jobs:
     get_params: 
       skip_download: true
 - name: build-mvn-cache
+  serial: true
   plan:
   - get: sts4
     trigger: true