diff --git a/ci/run_raft_dask_pytests.sh b/ci/run_raft_dask_pytests.sh
index 46cd211d2e..07d0b5baa0 100755
--- a/ci/run_raft_dask_pytests.sh
+++ b/ci/run_raft_dask_pytests.sh
@@ -6,4 +6,4 @@ set -euo pipefail
 # Support invoking run_raft_dask_pytests.sh outside the script directory
 cd "$(dirname "$(realpath "${BASH_SOURCE[0]}")")"/../python/raft-dask/raft_dask
 
-pytest --cache-clear "$@" test
+pytest --cache-clear --import-mode=append "$@" test
diff --git a/ci/test_wheel_raft_dask.sh b/ci/test_wheel_raft_dask.sh
index b2ec9a0c8b..bc3af96688 100755
--- a/ci/test_wheel_raft_dask.sh
+++ b/ci/test_wheel_raft_dask.sh
@@ -14,10 +14,10 @@ python -m pip install "raft-dask-${RAPIDS_PY_CUDA_SUFFIX}[test]>=0.0.0a0" --find
 test_dir="python/raft-dask/raft_dask/test"
 
 # rapids-logger "pytest raft-dask"
-# python -m pytest ${test_dir}
+# python -m pytest --import-mode=append ${test_dir}
 
 # rapids-logger "pytest raft-dask (ucx-py only)"
-# python -m pytest ${test_dir} --run_ucx
+# python -m pytest --import-mode=append ${test_dir} --run_ucx
 
 rapids-logger "pytest raft-dask (ucxx only)"
-python -m pytest ${test_dir} --run_ucxx
+python -m pytest --import-mode=append ${test_dir} --run_ucxx