diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index 3935244..e9a8122 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -1,78 +1,34 @@
-# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
-# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
-
 name: Python package
-
 on:
   push:
     branches: [ master ]
     tags: '*'
   pull_request:
     branches: [ master ]
-
 jobs:
-  build:
-
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.11", "3.12", "3.13"]
-
+  build-python-package:
+    uses: nion-software/github-workflows/.github/workflows/build-python-package.yml@main
+    secrets:
+      anaconda-token: ${{ secrets.ANACONDA_TOKEN }}
+  pypi-publish:
+    name: Upload release to PyPI
+    needs: [build-python-package]
+    runs-on: ubuntu-latest
+    if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags')
+    environment: release
+    permissions:
+      id-token: write  # IMPORTANT: this permission is mandatory for trusted publishing
     steps:
-    - uses: actions/checkout@v4
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Display Python version
-      run: python -c "import sys; print(sys.version)"
-    - name: Build Distribution
-      run: |
-        python -m pip install --upgrade pip
-        python -m pip install build
-        python -m build
-    - name: Install Test Dependencies
-      run: |
-        pip install -r test-requirements.txt
-        pip install --no-deps git+https://github.com/nion-software/nionswift-usim.git#egg=nionswift-usim
-        python -m pip install mypy
-        mypy --version
-    - name: Type Checking
-      run: |
-        # use mypy -p to work around mypy issue 8944
-        mypy --namespace-packages --ignore-missing-imports --follow-imports=silent --strict --no-warn-redundant-casts --no-warn-unused-ignores --exclude "/test" -p nionswift_plugin.nion_instrumentation_ui -p nion.instrumentation
-    - name: Test
+    - name: Download All Artifacts
+      uses: actions/download-artifact@v4
+    - name: Copy files to upload to PyPI to dist.
+      shell: bash
       run: |
-        python -m unittest discover -s nion/instrumentation/test -p "*_test.py" -v
-    - name: Upload Artifacts
-      uses: actions/upload-artifact@v4
-      if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.11'
-      with:
-        name: distribution
-        path: dist
-    - name: Publish package to PyPI
+        mkdir dist
+        find . -name "*.whl" -exec cp {} dist \;
+        ls -lR .
+    - name: Publish package distributions 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 == '3.11'
       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 == '3.11'
-      uses: conda-incubator/setup-miniconda@v3
-      with:
-        auto-update-conda: true
-        python-version: '3.11'
-    - name: Build/publish anaconda package
-      if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags') && matrix.os == 'ubuntu-latest' && matrix.python-version == '3.11'
-      shell: bash -l {0}
-      run: |
-        # make a directory to avoid name conflicts with the channel. argh.
-        mkdir conda_build
-        pushd conda_build
-        conda update -n base --all -y
-        conda update --all -y
-        conda install conda-build anaconda-client -y
-        conda build -q --python ${{ matrix.python-version }} -c nion -c conda-forge --override-channels --skip-existing --user nion --token ${{ secrets.anaconda_token }} ..
-        popd
+        print-hash: true
diff --git a/test-requirements.txt b/test-requirements.txt
index 5f5e8ae..7fef31e 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -8,6 +8,3 @@ git+https://github.com/nion-software/nionui.git#egg=nionui
 git+https://github.com/nion-software/niondata.git#egg=niondata
 git+https://github.com/nion-software/nionswift.git#egg=nionswift
 git+https://github.com/nion-software/nionswift-io.git#egg=nionswift-io
-
-# handle nionswift-usim manually, otherwise it installs this package itself as a dependency.
-# git+https://github.com/nion-software/nionswift-usim.git#egg=nionswift-usim