diff --git a/.github/workflows/python-package.yaml b/.github/workflows/python-package.yaml
new file mode 100644
index 0000000..bf829b9
--- /dev/null
+++ b/.github/workflows/python-package.yaml
@@ -0,0 +1,37 @@
+name: Python package
+
+on:
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: Which tag to create and release?
+        required: true
+        default: v0.0.0
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.7"
+
+      - name: Install dependencies
+        run: python -m pip install --upgrade pip setuptools wheel Cython
+
+      - name: Build sdist
+        run: python setup.py sdist
+
+      - name: Upload sdist
+        if: github.event_name == 'workflow_dispatch' && github.event.inputs.tag != ''
+        uses: softprops/action-gh-release@v1
+        with:
+          tag_name: ${{ github.event.inputs.tag }}
+          files: dist/PyQuda-${{ github.event.inputs.tag }}.tar.gz
+          fail_on_unmatched_files: true
diff --git a/pyquda/version.py b/pyquda/version.py
index 63af887..364e7ba 100644
--- a/pyquda/version.py
+++ b/pyquda/version.py
@@ -1 +1 @@
-__version__ = "0.6.3"
+__version__ = "0.6.4"