diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c2002409c1db263e86a184ef005d84d1e8594431..c535e0c9d5ef5f56ab91adb6c50dbb8597306df0 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -26,6 +26,7 @@ tests:
         - apt update
         - apt install -y libgl1-mesa-glx xvfb graphviz xdg-utils libcairo2-dev libjpeg-dev libgif-dev
         - pip install tox
+        - python -c 'from test.support import swap_attr2'
         - xvfb-run tox -v --recreate
 
 build_and_deploy_docs: