diff --git a/.github/workflows/build-publish.yml b/.github/workflows/build-publish.yml
index 8843de6..62bf8ec 100644
--- a/.github/workflows/build-publish.yml
+++ b/.github/workflows/build-publish.yml
@@ -2,6 +2,7 @@
 name: Publish Python Package
 
 on:
+  pull_request:
   push:
     tags:
       - "[0-9]+.[0-9]+.[0-9]+*"  # Tag will be used for version via setuptools_scm, should match version in HISTORY.txt
@@ -42,12 +43,14 @@ jobs:
         run: python -m build
 
       - name: Publish to PyPI
+        if: github.ref_type == 'tag'
         env:
           TWINE_USERNAME: __token__
           TWINE_PASSWORD: ${{ secrets.PYPI_API_TOKEN }}
         run: twine upload dist/*
 
 #      - name: Publish to Test PyPI
+#        if: github.ref_type == 'tag'
 #        env:
 #          TWINE_USERNAME: __token__
 #          TWINE_PASSWORD: ${{ secrets.TEST_PYPI_API_TOKEN }}