diff --git a/.github/workflows/pythonpublish.yml b/.github/workflows/pythonpublish.yml
index 986aa270..bb40a436 100644
--- a/.github/workflows/pythonpublish.yml
+++ b/.github/workflows/pythonpublish.yml
@@ -19,8 +19,8 @@ jobs:
         pip install setuptools wheel twine pandoc
     - name: Build and publish
       env:
-        TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
-        TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
+        TWINE_USERNAME: "${{ secrets.PYPI_USERNAME }}"
+        TWINE_PASSWORD: "${{ secrets.PYPI_PASSWORD }}"
       run: |
         python setup.py sdist bdist_wheel --universal
         twine upload --repository-url https://upload.pypi.org/legacy/ --verbose dist/*