diff --git a/.github/workflows/release-pypi.yml b/.github/workflows/release-pypi.yml
index eeae33f75..6cf8abe62 100644
--- a/.github/workflows/release-pypi.yml
+++ b/.github/workflows/release-pypi.yml
@@ -197,6 +197,11 @@ jobs:
         with:
           path: artifacts/
 
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.12'
+
       - name: Organize wheels into dist/
         run: |
           mkdir -p dist/
diff --git a/version.py b/version.py
index 874c52b8c..2769b1602 100644
--- a/version.py
+++ b/version.py
@@ -3,4 +3,4 @@
 Shared across the top-level package and kt-kernel.
 """
 
-__version__ = "0.6.3"
+__version__ = "0.6.3.post1"