diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8f071f34e4b2e8da5c208d032e1676db58c40b6a..1c4a6e4969f80c1b8091fe7ea4489c995602d04e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -29,6 +29,8 @@ test:
     - pip install poppy wget
     - pip install http://www.univie.ac.at/simcado/SimCADO.tar.gz
     - python -c "import simcado; simcado.get_extras()"
+    # Add Python CPL
+    - pip install python-cpl
     # Initialize the database with the current Data Model.
     - export database_user="${POSTGRES_USER}"
     - coverage run src/micado/toolbox/backends/postgresql/dbtestsetup.py