diff --git a/_config b/_config
index d5a8689..7562944 100644
--- a/_config
+++ b/_config
@@ -1,5 +1,6 @@
 
 BuildFlags: setvcs
+BuildFlags: slsaversion:v1
 
 Release: <CI_CNT>.<B_CNT> spec:slfo.1.<CI_CNT>.<B_CNT>