diff --git a/cron/scripts/website-update.sh b/cron/scripts/website-update.sh
index 7c5812d6e8ba7ffce4d72795f91ca836a523b0ef..1e7b18f081eec125a6412cac37e5a033e3b9d653 100755
--- a/cron/scripts/website-update.sh
+++ b/cron/scripts/website-update.sh
@@ -3,7 +3,7 @@
 set -e
 set -u
 
-PRODUCTION_BRANCH=master
+PRODUCTION_BRANCH="${PRODUCTION_BRANCH:-master}"
 
 git_rev_name() {
     git rev-parse --abbrev-ref --symbolic-full-name "$@"