diff --git a/.github/workflows/tests_coverage.yml b/.github/workflows/tests_coverage.yml
index 41c3db3..2bfc6ff 100644
--- a/.github/workflows/tests_coverage.yml
+++ b/.github/workflows/tests_coverage.yml
@@ -40,7 +40,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install --upgrade tox tox-gh-actions
+          python -m pip install --upgrade tox tox-gh-actions .[dev]
 
       - name: Tox tests
         run: |