diff --git a/.github/workflows/regression-tests.yml b/.github/workflows/regression-tests.yml
index d7688d46a..a5243a10e 100644
--- a/.github/workflows/regression-tests.yml
+++ b/.github/workflows/regression-tests.yml
@@ -30,4 +30,4 @@ jobs:
         pip install tox tox-gh-actions
 
     - name: Test with tox
-      run: tox -- --splits 10 --group ${{ matrix.group }}
+      run: tox -- --splits 10 --group ${{ matrix.group }} --splitting-algorithm least_duration