diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 59e334c9..1185ac0c 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -38,6 +38,8 @@ tests:
   stage: Unittests
   needs: ["formatter"]
   script:
+    - apt-get update
+    - apt-get install -y libgl1-mesa-glx
     - pip install .[dev]
     - coverage run --source=./bec_widgets -m pytest -v --junitxml=report.xml --random-order ./tests/tests
     - coverage report