diff --git a/jjb/global-defaults.yaml b/jjb/global-defaults.yaml
index f81e8c2..f285698 100644
--- a/jjb/global-defaults.yaml
+++ b/jjb/global-defaults.yaml
@@ -41,7 +41,7 @@
 
     # Timeout in minutes
     build-timeout: 90
-    build-node: ubuntu2004-builder-4c-4g
+    build-node: ubuntu1804-builder-4c-4g
 
     archive-artifacts: ''