diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 948216f..3c5bed0 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -105,5 +105,21 @@ jobs:
     permissions:
       id-token: write
     steps:
-    - name: Publish package distributions to PyPI
-      uses: pypa/gh-action-pypi-publish@release/v1
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install setuptools wheel
+          pip install -r python/requirements.txt
+
+      - name: build
+        run: python setup.py build sdist
+
+      - name: Publish package distributions to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
diff --git a/setup.py b/setup.py
index 407145a..2a75e80 100644
--- a/setup.py
+++ b/setup.py
@@ -47,8 +47,8 @@
       'python_requires': '>=3.10',
       'install_requires': requirements,
       'classifiers': [
-            'License :: OSI Approved :: BSD License',
-            'Operating System :: POSIX',
+            'License :: Public Domain',
+            'Operating System :: OS Independent',
             'Programming Language :: C',
             'Programming Language :: Python'
       ]