diff --git a/salt/common/tools/sbin/soup b/salt/common/tools/sbin/soup
index 65bac5b16..a48f667fb 100755
--- a/salt/common/tools/sbin/soup
+++ b/salt/common/tools/sbin/soup
@@ -1035,6 +1035,7 @@ main() {
     elif [[ ! -z "$ISOLOC" ]]; then
       airgap_mounted
       airgap_update_dockers
+      unmount_update
     else
       update_registry
       set +e