diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index f622374..8144664 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -36,18 +36,19 @@ jobs:
 
     - name: Install dependencies
       run: |
-        pip install --quiet --upgrade pip setuptools tox>=4.5.1
+        pip install --quiet --upgrade pip
 
     - name: Run essential tests
       if: ${{ matrix.tox-env != 'extended' }}
       run: |
-        tox run -e ${{ matrix.tox-env }}
+        pip install --quiet --upgrade .[test,cli]
+        pytest
 
     - name: Run linters and coverage
       if: ${{ matrix.tox-env == 'extended' }}
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       run: |
-        pip install --quiet --upgrade coveralls
-        tox run -e ${{ matrix.tox-env }}
+        pip install --quiet --upgrade coveralls tox>=4.5.1
+        tox --hashseed notset run -e ${{ matrix.tox-env }}
         coveralls --service=github