diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index fb750ab..3bc9b54 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -13,6 +13,6 @@ jobs:
     - name: Install Poetry
       uses: snok/install-poetry@v1
     - name: Install dependencies
-      run: poetry install
+      run: poetry install --with dev
     - name: Run pytest
       run: poetry run pytest .