diff --git a/nodepool/scripts/configure_mirror.sh b/nodepool/scripts/configure_mirror.sh
index 8e7036571d..00a35a5b61 100755
--- a/nodepool/scripts/configure_mirror.sh
+++ b/nodepool/scripts/configure_mirror.sh
@@ -97,6 +97,7 @@ export NODEPOOL_MARIADB_MIRROR=${NODEPOOL_MARIADB_MIRROR:-http://$NODEPOOL_MIRRO
 # Reverse proxy servers
 export NODEPOOL_DOCKER_REGISTRY_PROXY=${NODEPOOL_DOCKER_REGISTRY_PROXY:-http://$NODEPOOL_MIRROR_HOST:8081/registry-1.docker}
 export NODEPOOL_RDO_PROXY=${NODEPOOL_RDO_PROXY:-http://$NODEPOOL_MIRROR_HOST:8080/rdo}
+export NODEPOOL_TARBALLS_PROXY=${NODEPOOL_TARBALLS_PROXY:-http://$NODEPOOL_MIRROR_HOST:8080/tarballs}
 EOF
 
 sudo mkdir -p /etc/ci