diff --git a/roles/mbs/common/templates/config.py b/roles/mbs/common/templates/config.py
index a57a6351b1..97a909739e 100644
--- a/roles/mbs/common/templates/config.py
+++ b/roles/mbs/common/templates/config.py
@@ -96,6 +96,7 @@ class ProdConfiguration(BaseConfiguration):
         'releng',
     ]
 
+    REBUILD_STRATEGY = 'only-changed'
     REBUILD_STRATEGY_ALLOW_OVERRIDE = True
 
 {% if env == 'staging' %}