diff --git a/env.mk b/env.mk
index 04c2c33df1..da5eee4312 100644
--- a/env.mk
+++ b/env.mk
@@ -18,4 +18,4 @@ export DADK?=$(shell which dadk)
 endif
 
 # RootFS manifest name under config/rootfs-manifests/
-export ROOTFS_MANIFEST?=default
\ No newline at end of file
+export ROOTFS_MANIFEST?=ubuntu2404