diff --git a/.github/workflows/tests+pypi.yml b/.github/workflows/tests+pypi.yml
index e8bf7ace..01557ce1 100644
--- a/.github/workflows/tests+pypi.yml
+++ b/.github/workflows/tests+pypi.yml
@@ -267,13 +267,15 @@ jobs:
           cd ..
 
       - if: github.event_name == 'push' && github.ref == 'refs/heads/main'
-        uses: pypa/gh-action-pypi-publish@unstable/v1
+        uses: pypa/gh-action-pypi-publish@unstable/v1.12.0
         with:
+          attestations: false
           repository_url: https://test.pypi.org/legacy/
           packages-dir: ${{ matrix.package-dir }}/dist
 
       - if: startsWith(github.ref, 'refs/tags')
-        uses: pypa/gh-action-pypi-publish@unstable/v1
+        uses: pypa/gh-action-pypi-publish@unstable/v1.12.0
         with:
+          attestations: false
           packages-dir: ${{ matrix.package-dir }}/dist