diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index 17840f2..d1238ce 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -11,8 +11,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ 3.9, 3.10, 3.11, 3.12 ]
-        poetry-version: [ 1.8.2 ]
+        python-version: [ "3.9", "3.10", "3.11", "3.12" ]
+        poetry-version: [ "1.8.2" ]
 
     steps:
       - uses: actions/checkout@v4
@@ -33,7 +33,7 @@ jobs:
       - name: Install dependencies
         run: |
           poetry config virtualenvs.create false
-          poetry install
+          poetry install --no-root
       - name: Test with pytest
         run: |
           PYTHONPATH=$(realpath .) coverage run -m pytest tests