diff --git a/.circleci/config.yml b/.circleci/config.yml
index 903c2aa56d..6d842d2389 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -341,7 +341,7 @@ jobs:
                 nipreps/sdcflows:latest \
                 pytest -v --junit-xml=/out/pytest.xml \
                        --cov sdcflows --cov-report xml:/out/unittests.xml \
-                       sdcflows/
+                       -n auto sdcflows/
       - save_cache:
           key: workdir-v3-{{ .Branch }}-{{ .BuildNum }}
           paths:
diff --git a/.github/workflows/unittests.yml b/.github/workflows/unittests.yml
index 06ec4b298f..716c30d92c 100644
--- a/.github/workflows/unittests.yml
+++ b/.github/workflows/unittests.yml
@@ -175,7 +175,7 @@ jobs:
       run: |
         export LD_LIBRARY_PATH=/usr/lib/fsl/5.0:$LD_LIBRARY_PATH
         export PATH=$ANTSPATH:${AFNI_HOME}:/usr/lib/fsl/5.0:$PATH
-        pytest -v --cov sdcflows --cov-report xml:cov.xml --doctest-modules sdcflows
+        pytest -v --cov sdcflows --cov-report xml:cov.xml --doctest-modules -n auto sdcflows
 
     - uses: codecov/codecov-action@v4
       with: