diff --git a/.github/workflows/full-stack.yaml b/.github/workflows/full-stack.yaml
index 947f59e..65fe66f 100644
--- a/.github/workflows/full-stack.yaml
+++ b/.github/workflows/full-stack.yaml
@@ -27,7 +27,7 @@ jobs:
 
     env:
       OE_LICENSE: ${{ github.workspace }}/oe_license.txt
-      PYTEST_ARGS: -n logical --rootdir=. --durations=20
+      PYTEST_ARGS: -n logical --rootdir=. --durations=20 -v
 
     steps:
     - uses: actions/checkout@v4
@@ -54,6 +54,7 @@ jobs:
       with:
         repository: openforcefield/openff-fragmenter
         path: openff-fragmenter
+        ref: no-duplicate-runslow
 
     - name: Checkout SMIRNOFF plugins
       uses: actions/checkout@v4
@@ -95,13 +96,18 @@ jobs:
           openff-qcsubmit/ \
           openff-units/ \
           openff-models/ \
+          openff-fragmenter/ \
           smirnoff-plugins/
 
     - name: Run 'everything all at once' tests
       run: |
         python -m pytest $PYTEST_ARGS \
           smirnoff-plugins/smirnoff_plugins/_tests/ \
+          openff-toolkit/openff/toolkit/_tests/ \
           openff-interchange/openff/interchange/_tests/ \
+          openff-models/openff/models/_tests/ \
+          openff-units/openff/units/_tests/ \
+          openff-fragmenter/openff/fragmenter/_tests/ \
           --ignore=smirnoff-plugins/smirnoff_plugins/_tests/handlers/test_nonbonded.py \
           --ignore=openff-interchange/openff/interchange/_tests/unit_tests/components/test_packmol.py \
           --ignore=openff-interchange/openff/interchange/_tests/test_parameter_plugins.py::test_force_field_custom_handler \