diff --git a/.github/workflows/python-tests.yml b/.github/workflows/python-tests.yml
index 171159c0..11e117ca 100644
--- a/.github/workflows/python-tests.yml
+++ b/.github/workflows/python-tests.yml
@@ -38,7 +38,7 @@ jobs:
         run: |
           python -m pip install poetry
           poetry config virtualenvs.create false
-          poetry install --no-interaction --no-ansi
+          poetry install --no-interaction --no-ansi --without dev
       - name: Run tests
         run: |
           export IS_UBUNTU_CI=$(test "${{ matrix.os }}" = "ubuntu-latest" && echo "true" || echo "false")