diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
index b29e197..ac4de7e 100644
--- a/.github/workflows/cd.yml
+++ b/.github/workflows/cd.yml
@@ -47,3 +47,7 @@ jobs:
           path: dist
 
       - uses: pypa/gh-action-pypi-publish@release/v1
+        if: github.event_name == 'release' && github.event.action == 'published'
+        with:
+          # Remember to tell (test-)pypi about this repo before publishing
+          repository-url: https://test.pypi.org/legacy/