diff --git a/services/web/Jenkinsfile b/services/web/Jenkinsfile
index f86462dc04..8a844ca0a0 100644
--- a/services/web/Jenkinsfile
+++ b/services/web/Jenkinsfile
@@ -110,6 +110,9 @@ pipeline {
 
   // The options directive is for configuration that applies to the whole job.
   options {
+    // Only build one at a time
+    disableConcurrentBuilds()
+    
     // we'd like to make sure remove old builds, so we don't fill up our storage!
     buildDiscarder(logRotator(numToKeepStr:'50'))