diff --git a/.zuul.yaml b/.zuul.yaml
index 29918cafc87a..8cad924e1f8b 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -419,6 +419,7 @@
         # Added in Yoga.
         NOVNC_FROM_PACKAGE: False
         NOVA_USE_UNIFIED_LIMITS: True
+        MYSQL_REDUCE_MEMORY: True
       devstack_services:
         # Disable OVN services
         br-ex-tcpdump: false