Use PyPI API tokens

.gitlab-ci.yml

@@ -67,7 +67,8 @@ pages:
   only:
     - master
 
-# Upload package to PyPI
+# Upload package to PyPI.
+# Place your PyPI API token in the repository's GitLab CI secrets.
 pypi:
   stage: deploy
   image: python:slim
@@ -75,7 +76,7 @@ pypi:
     GIT_STRATEGY: none
   script:
     - pip install twine
-    - twine upload *.tar.* *.whl
+    - twine upload --username __token__ --password $PYPI_API_TOKEN *.tar.* *.whl
   dependencies:
     - build
   only: