diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d417ce36220385913ea29d7503108c9d3bc51625..12e9ace0a50e0225b287c41f6bf814de4b5c4c73 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -29,4 +29,4 @@ build-singularity:
     - apt-get install -qy lftp
     - mkdir -p ~/.ssh/
     - touch ~/.ssh/known_hosts
-    - lftp -u $KM3NET_SFTP_USER,$KM3NET_SFTP_PASSWORD sftp://$KM3NET_SFTP_HOST -e "set ssl:verify-certificate no; cd singularity/; put $SINGULARITY_IMAGE; bye"
+    - lftp -d -u $KM3NET_SFTP_USER,$KM3NET_SFTP_PASSWORD sftp://$KM3NET_SFTP_HOST -e "set ssl:verify-certificate no; cd singularity/; put $SINGULARITY_IMAGE; bye"