diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 07c874f0..d84f9330 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -25,8 +25,8 @@ jobs:
           sudo apt-add-repository ppa:ubuntugis/ubuntugis-unstable
           sudo apt-get update
           sudo apt-get install gdal-bin libgdal-dev
-          pip install GDAL==3.4.3 pytest
-          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+          pip install GDAL==3.4.3 poetry
+          poetry install
       - name: Test with pytest
         run: |
-          pytest
+          poetry run pytest -v