diff --git a/scripts/unify-twilight-and-stable.sh b/scripts/unify-twilight-and-stable.sh
index 6f09a3836..2cf10f594 100644
--- a/scripts/unify-twilight-and-stable.sh
+++ b/scripts/unify-twilight-and-stable.sh
@@ -10,5 +10,5 @@ fi
 
 set -ex
 
-$(dirname $0)/merge-to-branch.sh twilight
-$(dirname $0)/merge-to-branch.sh stable
+sh $(dirname $0)/merge-to-branch.sh twilight
+sh $(dirname $0)/merge-to-branch.sh stable