diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b0092cb1c..90b30b6dc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -140,6 +140,7 @@ jobs:
       -
         name: List installed Python dependencies
         run: |
+          pipenv --python ${{ steps.setup-python.outputs.python-version }} run pip install pytest_mock
           pipenv --python ${{ steps.setup-python.outputs.python-version }} run pip list
       -
         name: Tests