diff --git a/.github/workflows/mac.yml b/.github/workflows/mac.yml
index e16e27d1..08054435 100644
--- a/.github/workflows/mac.yml
+++ b/.github/workflows/mac.yml
@@ -27,14 +27,14 @@ jobs:
           pipx ensurepath
           source ~/.zshrc
           poetry env use ${{ matrix.python-version }}
-          poetry install --with dev
+          poetry install --with dev --extras all
 
       - name: Run test suite
         env:
           # show timings of tests
           PYTEST_ADDOPTS: "--durations=0"
         run: |
-          poetry run pytest --cov janus_core --cov-append .
+          poetry run pytest --run-extra-mlips --cov janus_core --cov-append .
 
       - name: Report coverage to Coveralls
         uses: coverallsapp/github-action@v2