diff --git a/kas/corstone1000-base.yml b/kas/corstone1000-base.yml
index a8b98603..045a5473 100644
--- a/kas/corstone1000-base.yml
+++ b/kas/corstone1000-base.yml
@@ -5,7 +5,7 @@ distro: poky
 
 defaults:
   repos:
-    branch: master
+    branch: scarthgap
 
 repos:
   meta-arm: