diff --git a/zuul.d/stein_jobs.yaml b/zuul.d/stein_jobs.yaml
index 037bba2..f84df2a 100644
--- a/zuul.d/stein_jobs.yaml
+++ b/zuul.d/stein_jobs.yaml
@@ -338,3 +338,5 @@
     vars:
       branch_override: stable/stein
       network_api_extensions_common: *api_extensions
+      devstack_localrc:
+        ADVANCED_INSTANCE_TYPE: ds512M