diff --git a/build-all b/build-all
index 6ca37f4..79a2147 100755
--- a/build-all
+++ b/build-all
@@ -54,10 +54,10 @@ build_simple() { : \
  && build   notwa-util          \
 \
 `# phase 2` \
- && build   cosmo-bootstrap     \
+ && build   cosmo-bootstrap     --build-arg=COSMO_FLAVOR="${1:-def}" \
 \
 `# phase 3` \
- && build   cosmo-all           \
+ && build   cosmo-all           --build-arg=COSMO_FLAVOR="${2:-def}" \
  && build   cosmo-dist          \
  && build   rescue              \
 \