diff --git a/.github/workflows/release-python.yml b/.github/workflows/release-python.yml
index 2c7c10a28..52f6f4c88 100644
--- a/.github/workflows/release-python.yml
+++ b/.github/workflows/release-python.yml
@@ -20,9 +20,5 @@ jobs:
         with:
           fetch-depth: 0
       - name: Release the port
-        env:
-          PYTHON_PYPI_USER: ${{ secrets.PYTHON_PYPI_USER }}
-          PYTHON_PYPI_PASSWORD: ${{ secrets.PYTHON_PYPI_PASSWORD }}
-        run: |
-          cd source/ports/py_port
-          bash ./upload.sh
+        working-directory: source/ports/py_port
+        run: ./upload.sh
diff --git a/source/ports/py_port/VERSION b/source/ports/py_port/VERSION
index 09a3acfa1..5d4294b91 100644
--- a/source/ports/py_port/VERSION
+++ b/source/ports/py_port/VERSION
@@ -1 +1 @@
-0.6.0
\ No newline at end of file
+0.5.1
\ No newline at end of file
diff --git a/source/ports/py_port/upload.sh b/source/ports/py_port/upload.sh
index 0ca8eb397..d24895dc4 100644
--- a/source/ports/py_port/upload.sh
+++ b/source/ports/py_port/upload.sh
@@ -29,12 +29,9 @@ if [[ "$PYPI_VERSION" == "$PORT_VERSION" ]]; then
 	exit 0
 fi
 
-export TWINE_USERNAME=${PYTHON_PYPI_USER:-}
-export TWINE_PASSWORD=${PYTHON_PYPI_PASSWORD:-}
-
 # Install dependencies and upload MetaCall package
-python3 -m pip install --user --upgrade twine setuptools wheel
-python3 setup.py sdist bdist_wheel
+python3 -m pip install --user --upgrade twine setuptools wheel build
+python3 -m build
 python3 -m twine check dist/*
 python3 -m twine upload dist/*