diff --git a/.zuul.yaml b/.zuul.yaml
index f98107cb3f..d1e356f4ea 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -610,6 +610,8 @@
     nodeset: devstack-single-node-centos-8-stream
     voting: false
     timeout: 9000
+    vars:
+      configure_swap_size: 4096
 
 - job:
     name: devstack-async