diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 94413889fc6a3d0c930087ce7a0bb90c1a6b82cd..2bca91402a2e94aa4bbb5fd387cd103bf8b5d2f9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -39,6 +39,7 @@ Python 3 CuPy Nvidia Titan V:
     . ./ci-support-v0
     CONDA_ENVIRONMENT=.test-conda-env-py3.yml
     echo "- cupy" >> "$CONDA_ENVIRONMENT"
+    export PYOPENCL_TEST=port:cpu
     build_py_project_in_venv
     test_py_project