diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index acee381a..31a1c73c 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -5,35 +5,33 @@ on:
     branches: [main]
 
 jobs:
-  tests:
+  docs:
     name: "Build docs"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set up Python
         id: setup_python
-        uses: conda-incubator/setup-miniconda@v3
+        uses: actions/setup-python@v5
         with:
-          activate-environment: vplanet
-          environment-file: environment.yml
-          python-version: 3.9
+          python-version: '3.11'
+          cache: 'pip'
+          cache-dependency-path: setup.py
 
-      - name: Install
-        id: install
-        if: steps.setup_python.outcome == 'success'
-        shell: bash -l {0}
+      - name: Install system dependencies
         run: |
           sudo apt-get update
-          sudo apt-get install -y doxygen
-          sudo apt-get install -y doxygen-doc
+          sudo apt-get install -y doxygen doxygen-doc
+
+      - name: Install Python dependencies
+        run: |
           python -m pip install -U pip
           python -m pip install -e .
+          python -m pip install sphinx sphinx-rtd-theme breathe sphinxcontrib-bibtex
 
       - name: Build
         id: build
-        if: steps.install.outcome == 'success'
-        shell: bash -l {0}
         run: |
           cd docs
           make html
@@ -42,7 +40,6 @@ jobs:
 
       - name: Publish
         uses: JamesIves/github-pages-deploy-action@v4
-        # NOTE: Triggered only when the PR is *merged* (event_name == 'push')
         if: steps.build.outcome == 'success' && github.event_name == 'push'
         with:
           branch: gh-pages
diff --git a/.github/workflows/examples.yml b/.github/workflows/examples.yml
index 0b916793..3e763c10 100644
--- a/.github/workflows/examples.yml
+++ b/.github/workflows/examples.yml
@@ -5,45 +5,38 @@ on:
     types: [published]
 
 jobs:
-  tests:
-    name: '${{ matrix.python-version }}'
+  examples:
+    name: 'Examples on py${{ matrix.python-version }}'
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
-      - name: Install Latex
-        id: install_latex
-        shell: bash -l {0}
+      - name: Install LaTeX
         run: |
           sudo apt-get update
-          sudo apt-get install cm-super
-          sudo apt-get install texlive-fonts-recommended texlive-fonts-extra
-          sudo apt-get install dvipng
+          sudo apt-get install -y cm-super texlive-fonts-recommended texlive-fonts-extra dvipng
 
       - name: Set up Python
-        id: setup_python
-        uses: conda-incubator/setup-miniconda@v3
+        uses: actions/setup-python@v5
         with:
-          activate-environment: vplanet
-          environment-file: environment.yml
           python-version: ${{ matrix.python-version }}
+          cache: 'pip'
+          cache-dependency-path: setup.py
 
-      - name: Install
-        id: install
-        if: steps.setup_python.outcome == 'success'
-        shell: bash -l {0}
+      - name: Install dependencies
         run: |
           python -m pip install -U pip
           python -m pip install -e .
 
-      - name: Run Examples
-        if: steps.install.outcome == 'success'
-        shell: bash -l {0}
+      - name: Build vplanet
+        run: make opt
+
+      - name: Run examples
         run: python docs/run_examples.py
diff --git a/.github/workflows/floatingpoint.yml b/.github/workflows/floatingpoint.yml
index 381fc36b..a62a5a0c 100644
--- a/.github/workflows/floatingpoint.yml
+++ b/.github/workflows/floatingpoint.yml
@@ -13,20 +13,23 @@ jobs:
       fail-fast: false
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
       - name: Set up Python
-        id: setup_python
-        uses: conda-incubator/setup-miniconda@v3
+        uses: actions/setup-python@v5
         with:
-          activate-environment: vplanet
-          environment-file: environment.yml
-          python-version: 3.9
+          python-version: '3.11'
+          cache: 'pip'
+          cache-dependency-path: setup.py
 
-      - name: Run
-        shell: bash -l {0}
+      - name: Install dependencies
+        run: |
+          python -m pip install -U pip
+          python -m pip install -e .
+
+      - name: Run floating point check
         run: |
           cd tests/
           python floatingpoint.py
diff --git a/.github/workflows/memcheck.yml b/.github/workflows/memcheck.yml
index 165cde4f..055d55b6 100644
--- a/.github/workflows/memcheck.yml
+++ b/.github/workflows/memcheck.yml
@@ -12,29 +12,25 @@ jobs:
       fail-fast: false
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
       - name: Set up Python
-        id: setup_python
-        uses: conda-incubator/setup-miniconda@v3
+        uses: actions/setup-python@v5
         with:
-          activate-environment: vplanet
-          environment-file: environment.yml
-          python-version: 3.8
+          python-version: '3.11'
+          cache: 'pip'
+          cache-dependency-path: setup.py
 
-      - name: Install valgrind
-        id: install
-        if: steps.setup_python.outcome == 'success'
-        shell: bash -l {0}
+      - name: Install dependencies
         run: |
           sudo apt-get update
-          sudo apt-get install valgrind
+          sudo apt-get install -y valgrind
+          python -m pip install -U pip
+          python -m pip install -e .
 
       - name: Run valgrind test
-        if: steps.install.outcome == 'success'
-        shell: bash -l {0}
         run: |
           cd tests/
           python valgrind.py
diff --git a/.github/workflows/pip-install.yml b/.github/workflows/pip-install.yml
index 27c88725..75902e20 100644
--- a/.github/workflows/pip-install.yml
+++ b/.github/workflows/pip-install.yml
@@ -1,78 +1,23 @@
 name: pip-install
+
 on:
   release:
-    types: [published]
+    types:
+      - published
 
 jobs:
-  build_wheels:
-    name: Building wheel for ${{ matrix.os }}:Python-${{ matrix.python-version }}
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-20.04, ubuntu-22.04, macos-12, macos-13, macos-14]
-        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
-        exclude:
-          - os: ubuntu-22.04
-            python-version: '3.6'
-          - os: macos-14
-            python-version: '3.6'
-          - os: macos-14
-            python-version: '3.7'
-      fail-fast: false
 
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Set up Python
-        id: setup_python
-        uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      - name: Install packages
-        run: |
-          python -m pip install -U pip
-          python -m pip install setuptools
-          python -m pip install cibuildwheel
-
-      - name: Build wheel on Linux
-        if: runner.os == 'Linux'
-        run: |
-          python -m cibuildwheel --output-dir wheelhouse
-        env:
-          CIBW_BUILD: 'cp3?-*'
-          CIBW_SKIP: '*-manylinux_i686'
-          CIBW_MANYLINUX_X86_64_IMAGE: manylinux2014
-
-      - name: Build wheel on macOS
-        if: runner.os == 'macOS'
-        run: |
-          python -m cibuildwheel --output-dir wheelhouse
-
-      - name: Upload wheel artifact
-        uses: actions/upload-artifact@v4
-        with:
-          name: wheel-${{ matrix.os }}-${{ matrix.python-version }}
-          path: ./wheelhouse/
-
-  build_sdist:
-    name: Building source for ${{ matrix.os }}:Python-${{ matrix.python-version }}
+  build:
+    name: 'py${{ matrix.python }} on ${{ matrix.os }}'
     runs-on: ${{ matrix.os }}
     strategy:
-      matrix:
-        os: [ubuntu-20.04, ubuntu-22.04, macos-12, macos-13, macos-14]
-        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
-        exclude:
-          - os: ubuntu-22.04
-            python-version: '3.6'
-          - os: macos-14
-            python-version: '3.6'
-          - os: macos-14
-            python-version: '3.7'
       fail-fast: false
+      matrix:
+        os: [ubuntu-22.04, ubuntu-24.04, macos-15-intel, macos-26]
+        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           submodules: true
           fetch-depth: 0
@@ -80,92 +25,43 @@ jobs:
       - uses: actions/setup-python@v5
         name: Install Python
         with:
-          python-version: ${{ matrix.python-version }}
+          python-version: ${{ matrix.python }}
+          allow-prereleases: true
 
-      - name: Install packages
+      - name: Build
         run: |
-          python -m pip install -U pip
-          python -m pip install setuptools
+          python -m pip install -U pip build twine setuptools setuptools_scm wheel
+          python -m build
 
-      - name: Build sdist
-        run: python setup.py sdist
+      - name: Test the sdist
+        run: |
+          python -m venv venv-sdist
+          venv-sdist/bin/python -m pip install dist/vplanet*.tar.gz
+          venv-sdist/bin/python -c "import vplanet; print(vplanet.__version__)"
+
+      - name: Test the wheel
+        run: |
+          python -m venv venv-wheel
+          venv-wheel/bin/python -m pip install dist/vplanet*.whl
+          venv-wheel/bin/python -c "import vplanet; print(vplanet.__version__)"
 
-      - name: Upload sdist artifact
-        uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v4
         with:
-          name: sdist-${{ matrix.os }}-${{ matrix.python-version }}
-          path: dist/
+          name: dist-${{ matrix.os }}-${{ matrix.python }}
+          path: dist/*
 
   upload_pypi:
-    needs: [build_wheels, build_sdist]
-    runs-on: ubuntu-22.04
+    needs: [build]
+    runs-on: ubuntu-latest
+    if: github.event_name == 'release' && github.event.action == 'published' && github.repository == 'VirtualPlanetaryLaboratory/vplanet'
+    permissions:
+      id-token: write
 
     steps:
-     - uses: actions/download-artifact@v4
-       with:
-          name: wheel-ubuntu-20.04-3.6.whl
-          path: wheelhouse
-
-     - uses: actions/download-artifact@v4
-       with:
-          name: wheel-ubuntu-22.04-*
-          path: wheelhouse
-
-     - uses: actions/download-artifact@v4
-       with:
-          name: wheel-macos-12-*
-          path: wheelhouse
-
-     - uses: actions/download-artifact@v4
-       with:
-          name: wheel-macos-13-*
-          path: wheelhouse
-
-     - uses: actions/download-artifact@v4
-       with:
-          name: wheel-macos-14-*
-          path: wheelhouse
-
-     - uses: actions/download-artifact@v4
-       with:
-          name: sdist-ubuntu-20.04-*
-          path: dist
-
-     - uses: actions/download-artifact@v4
-       with:
-          name: sdist-ubuntu-22.04-*
-          path: dist
-
-     - uses: actions/download-artifact@v4
-       with:
-          name: sdist-macos-12-*
-          path: dist
-
-     - uses: actions/download-artifact@v4
-       with:
-          name: sdist-macos-13-*
-          path: dist
-
-     - uses: actions/download-artifact@v4
-       with:
-          name: sdist-macos-14-*
+      - uses: actions/download-artifact@v4
+        with:
+          pattern: dist-*
           path: dist
+          merge-multiple: true
 
-     - name: Install dependencies
-       run: |
-         python -m pip install --upgrade pip
-         python -m pip install twine
-
-     - name: Upload to PyPI
-       if: github.repository == 'VirtualPlanetaryLaboratory/vplanet'
-       run: python -m twine upload dist/* wheelhouse/*
-       env:
-         TWINE_USERNAME: __token__
-         TWINE_PASSWORD: ${{ secrets.pypi_password }}
-
-      # Only push to PyPI if we're on the public repo!
-    #  - uses: pypa/gh-action-pypi-publish@release/v1
-    #    if: (!github.event.release.prerelease) && github.event_name == 'release' && github.event.action == 'published' && github.repository == 'VirtualPlanetaryLaboratory/vplanet'
-    #    with:
-    #       user: __token__
-    #       password: ${{ secrets.pypi_password }}
+      - uses: pypa/gh-action-pypi-publish@release/v1
diff --git a/.github/workflows/sanitizer.yml b/.github/workflows/sanitizer.yml
index aab048fc..b8d45dc0 100644
--- a/.github/workflows/sanitizer.yml
+++ b/.github/workflows/sanitizer.yml
@@ -8,27 +8,28 @@ on:
 jobs:
   sanitizer:
     name: Run address-sanitizer on macOS
-    runs-on: macos-13
+    runs-on: macos-15
     strategy:
       fail-fast: false
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
       - name: Set up Python
-        id: setup_python
-        uses: conda-incubator/setup-miniconda@v3
+        uses: actions/setup-python@v5
         with:
-          activate-environment: vplanet
-          environment-file: environment.yml
-          python-version: 3.9
+          python-version: '3.11'
+          cache: 'pip'
+          cache-dependency-path: setup.py
+
+      - name: Install dependencies
+        run: |
+          python -m pip install -U pip
+          python -m pip install -e .
 
       - name: Run sanitizer
-        if: steps.setup_python.outcome == 'success'
-        shell: bash -l {0}
         run: |
-          make sanitize
           cd tests/
           python sanitizer.py
diff --git a/.github/workflows/tests-linux.yml b/.github/workflows/tests-linux.yml
deleted file mode 100644
index 9ea95a81..00000000
--- a/.github/workflows/tests-linux.yml
+++ /dev/null
@@ -1,75 +0,0 @@
-name: tests-linux
-
-on:
-  pull_request:
-    branches: [main]
-  workflow_dispatch:
-
-jobs:
-  tests:
-    name: '${{ matrix.os }}:python-${{ matrix.python-version }}'
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-20.04, ubuntu-22.04]
-        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
-        exclude:
-          - os: ubuntu-22.04
-            python-version: '3.6'
-      fail-fast: false
-
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-
-      - name: Set up Python
-        id: setup_python
-        uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      - name: Install
-        id: install
-        if: steps.setup_python.outcome == 'success'
-        shell: bash -l {0}
-        run: |
-          sudo apt-get update
-          python -m pip install -U pip
-          python -m pip install -e .
-          pip install pytest pytest-cov
-          sudo apt install lcov
-
-      - name: Run tests 
-        id: test
-        if: steps.install.outcome == 'success'
-        shell: bash -l {0}
-        run: |
-          make opt
-          pytest --tb=short --junitxml=junit/test-results.xml
-
-      - name: Check test output created
-        id: check_test_file
-        uses: andstor/file-existence-action@v3
-        with:
-          files: "${{ github.workspace }}/junit/test-results.xml"
-          fail: true
-
-      - name: Publish unit test results
-        if: ${{ matrix.os == 'ubuntu-22.04' && matrix.python-version == '3.9' }}
-        uses: EnricoMi/publish-unit-test-result-action@v2
-        with:
-          files: junit/test-*.xml
-
-      - name: Generate coverage
-        id: coverage
-        if: ${{ matrix.os == 'ubuntu-22.04' && matrix.python-version == '3.9' && steps.test.outcome == 'success' && steps.check_test_file.outcome == 'success' }}
-        run: make coverage
-
-      - name: Upload to CodeCov
-        if: ${{ matrix.os == 'ubuntu-22.04' && matrix.python-version == '3.9' }}
-        uses: codecov/codecov-action@v4
-        env:
-          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
-        with:
-          files: ./.coverage
diff --git a/.github/workflows/tests-macos-intel.yml b/.github/workflows/tests-macos-intel.yml
deleted file mode 100644
index cbf2313d..00000000
--- a/.github/workflows/tests-macos-intel.yml
+++ /dev/null
@@ -1,45 +0,0 @@
-name: tests-macos-intel
-on:
-  pull_request:
-    branches: [main]
-  workflow_dispatch:
-
-jobs:
-  tests:
-    name: '${{ matrix.os }}:python-${{ matrix.python-version }}'
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [macos-12, macos-13]
-        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
-      fail-fast: false
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-
-      - name: Set up Python
-        id: setup_python
-        uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      - name: Install dependencies
-        if: steps.setup_python.outcome == 'success'
-        run: |
-          python -m pip install -U pip
-          python -m pip install -e .
-          python -m pip install pytest pytest-cov
-
-      - name: Run tests
-        if: steps.setup_python.outcome == 'success'
-        run: |
-          make opt
-          pytest --tb=short --junitxml=junit/test-results.xml
-
-      - name: Check test ouptut created
-        id: check_test_file
-        uses: andstor/file-existence-action@v3
-        with:
-          files: "${{ github.workspace }}/junit/test-results.xml"
-          fail: true
diff --git a/.github/workflows/tests-macos-silicon.yml b/.github/workflows/tests-macos-silicon.yml
deleted file mode 100644
index 7ce3c060..00000000
--- a/.github/workflows/tests-macos-silicon.yml
+++ /dev/null
@@ -1,50 +0,0 @@
-name: tests-macos-silicon
-on:
-  pull_request:
-    branches: [main]
-  workflow_dispatch:
-
-jobs:
-  tests:
-    name: '${{ matrix.os }}:python-${{ matrix.python-version }}'
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [macos-14]
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
-      fail-fast: false
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-
-      - name: Install Xcode v15.4
-        uses: maxim-lobanov/setup-xcode@v1
-        with:
-          xcode-version: '15.4'
-
-      - name: Set up Python
-        id: setup_python
-        uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      - name: Install dependencies
-        if: steps.setup_python.outcome == 'success'
-        run: |
-          python -m pip install -U pip
-          python -m pip install -e .
-          python -m pip install pytest pytest-cov
-
-      - name: Run tests
-        if: steps.setup_python.outcome == 'success'
-        run: |
-          make opt
-          pytest --tb=short --junitxml=junit/test-results.xml
-
-      - name: Check test ouptut created
-        id: check_test_file
-        uses: andstor/file-existence-action@v3
-        with:
-          files: "${{ github.workspace }}/junit/test-results.xml"
-          fail: true
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
new file mode 100644
index 00000000..1be30645
--- /dev/null
+++ b/.github/workflows/tests.yml
@@ -0,0 +1,70 @@
+name: tests
+
+on:
+  pull_request:
+    branches: [main]
+  workflow_dispatch:
+
+jobs:
+  tests:
+    name: 'py${{ matrix.python-version }} on ${{ matrix.os }}'
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-22.04, ubuntu-24.04, macos-15-intel, macos-26]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - name: Set up Python ${{ matrix.python-version }}
+        id: setup_python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+          cache: 'pip'
+          cache-dependency-path: setup.py
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install -e .
+          python -m pip install pytest pytest-cov pytest-timeout
+
+      - name: Install lcov (Linux)
+        if: runner.os == 'Linux'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y lcov
+
+      - name: Build vplanet
+        run: make opt
+
+      - name: Run tests
+        timeout-minutes: 20
+        run: |
+          python -m pytest tests/ --tb=short -v --timeout=300 --junitxml=junit/test-results-${{ matrix.os }}-${{ matrix.python-version }}.xml
+
+      - name: Generate coverage
+        if: matrix.os == 'ubuntu-22.04' && matrix.python-version == '3.9'
+        run: make coverage
+
+      - name: Upload coverage to Codecov
+        if: matrix.os == 'ubuntu-22.04' && matrix.python-version == '3.9'
+        uses: codecov/codecov-action@v4
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: ./.coverage
+          flags: ${{ matrix.os }}-py${{ matrix.python-version }}
+          name: ${{ matrix.os }}-py${{ matrix.python-version }}
+          fail_ci_if_error: false
+
+      - name: Publish test results
+        uses: EnricoMi/publish-unit-test-result-action@v2
+        if: always() && runner.os == 'Linux'
+        with:
+          files: junit/test-*.xml
+          check_name: Test Results (py${{ matrix.python-version }} on ${{ matrix.os }})