diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 008816ea..dd4a1794 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -372,7 +372,6 @@ jobs:
     name: Upload release
     needs: test
     runs-on: ubuntu-latest
-    if: startsWith(github.ref, 'refs/tags/v')
 
     environment:
       name: pypi
@@ -392,6 +391,13 @@ jobs:
 
       - name: Publish PyPI package
         uses: pypa/gh-action-pypi-publish@release/v1
+        if: startsWith(github.ref, 'refs/tags/v')
+
+      - name: Publish TestPyPI package
+        uses: pypa/gh-action-pypi-publish@release/v1
+        if: github.ref == 'refs/heads/test-release'
+        with:
+          repository-url: https://test.pypi.org/legacy/
 
       - name: Create GitHub Release
         uses: softprops/action-gh-release@v2