diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f535951f..4f90292a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -53,6 +53,11 @@ jobs:
       run: pip install tox coverage
     - name: Run Tox
       run: tox -e py-cov
+    - name: Re-run Tox (without cattrs)
+      if: startsWith(matrix.platform, 'ubuntu-latest') && startsWith(matrix.python-version, '3.10')
+      run: |
+        .tox/py-cov/bin/pip uninstall -y cattrs
+        tox -e py-cov --skip-pkg-install
     - name: Produce coverage files
       run: |
         coverage combine