diff --git a/bob/devtools/data/gitlab-ci/single-package.yaml b/bob/devtools/data/gitlab-ci/single-package.yaml
index 675ac5e2d399590e9a836c22d7c2b2d18f150b6c..2ee09dfe35ea6f8a8fa6bf8e7524ebf0f06c29d8 100644
--- a/bob/devtools/data/gitlab-ci/single-package.yaml
+++ b/bob/devtools/data/gitlab-ci/single-package.yaml
@@ -19,6 +19,8 @@ stages:
 .build_template: &build_job
   stage: build
   script:
+    - echo "conda-root is: ${CONDA_ROOT}"
+    - echo "bootstrap is: ${BOOTSTRAP}"
     - curl --silent "${BOOTSTRAP}" --output "bootstrap.py"
     - python3 bootstrap.py -vv channel bdt
     - source ${CONDA_ROOT}/etc/profile.d/conda.sh
@@ -65,6 +67,8 @@ build_linux_36:
     PYTHON_VERSION: "3.6"
     BUILD_EGG: "true"
   script:
+    - echo "conda-root is: ${CONDA_ROOT}"
+    - echo "bootstrap is: ${BOOTSTRAP}"
     - curl --silent "${BOOTSTRAP}" --output "bootstrap.py"
     - python3 bootstrap.py -vv channel bdt
     - source ${CONDA_ROOT}/etc/profile.d/conda.sh