diff --git a/.github/workflows/test-n-publish.yml b/.github/workflows/test-n-publish.yml
index 60dd17a..5a91100 100644
--- a/.github/workflows/test-n-publish.yml
+++ b/.github/workflows/test-n-publish.yml
@@ -34,7 +34,7 @@ jobs:
         python setup.py build sdist bdist_wheel
     - name: Publish to PyPI
       if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
-      uses: pypa/gh-action-pypi-publish@master
+      uses: pypa/gh-action-pypi-publish@release/v1.5.1
       with:
         skip_existing: true
         user: __token__