--- a/.docker/Dockerfile-parachain-upgrade-data
+++ b/.docker/Dockerfile-parachain-upgrade-data
@@ -62,6 +62,7 @@
 
 ARG RUNTIME
 ARG REPLICA_FROM
+ENV REPLICA_FROM=${REPLICA_FROM}
 ARG POLKADOT_LAUNCH_BRANCH
 
 RUN apt-get -y update && \