diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index c732c8c..204923f 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -17,12 +17,12 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11", "3.12"]
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
     - name: Display Python version
@@ -41,26 +41,26 @@ jobs:
       run: |
         python -m unittest discover nionswift_plugin -v -p '*_test.py'
     - name: Upload Artifacts
-      uses: actions/upload-artifact@v3
-      if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.9'
+      uses: actions/upload-artifact@v4
+      if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.10'
       with:
         name: distribution
         path: dist
     - name: Publish package to PyPI
       uses: pypa/gh-action-pypi-publish@release/v1
-      if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags') && matrix.os == 'ubuntu-latest' && matrix.python-version == '3.9'
+      if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags') && matrix.os == 'ubuntu-latest' && matrix.python-version == '3.10'
       with:
         skip-existing: true
         user: __token__
         password: ${{ secrets.pypi_password }}
     - name: Set up Miniconda for conda-build
-      if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags') && matrix.os == 'ubuntu-latest' && matrix.python-version == '3.9'
-      uses: conda-incubator/setup-miniconda@v2
+      if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags') && matrix.os == 'ubuntu-latest' && matrix.python-version == '3.10'
+      uses: conda-incubator/setup-miniconda@v3
       with:
         auto-update-conda: true
         python-version: '3.10'
     - name: Build/publish anaconda package
-      if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags') && matrix.os == 'ubuntu-latest' && matrix.python-version == '3.9'
+      if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags') && matrix.os == 'ubuntu-latest' && matrix.python-version == '3.10'
       shell: bash -l {0}
       run: |
         # make a directory to avoid name conflicts with the channel. argh.