diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
index dc65534..8c65d4f 100644
--- a/.github/workflows/CI.yaml
+++ b/.github/workflows/CI.yaml
@@ -19,6 +19,7 @@ jobs:
           - '1' # Leave this line unchanged. '1' will automatically expand to the latest stable 1.x release of Julia.
         os:
           - ubuntu-latest
+          - macOS-latest
         arch:
           - x64
     steps:
@@ -53,6 +54,7 @@ jobs:
           - '1' # Leave this line unchanged. '1' will automatically expand to the latest stable 1.x release of Julia.
         os:
           - ubuntu-latest
+          - macOS-latest
         arch:
           - x64
     steps:
@@ -68,19 +70,6 @@ jobs:
           Pkg.Registry.add(RegistrySpec(url="https://github.com/JuliaRegistries/General"))
         env:
               JULIA_PKG_USE_CLI_GIT: 'true'
-      # - name: Use MicroMamba not Pixie with CondaPkg.jl
-      #   shell: julia --project=. --color=yes {0}
-      #   run: |
-      #     using Pkg
-      #     Pkg.add("PreferenceTools")
-      #     using PreferenceTools
-      #     PreferenceTools.add("CondaPkg", backend="MicroMamba")
-      #     Pkg.activate("./julia/OpenMDAO.jl")
-      #     PreferenceTools.add("CondaPkg", backend="MicroMamba")
-      #     Pkg.activate("./julia/OpenMDAO.jl/test")
-      #     PreferenceTools.add("CondaPkg", backend="MicroMamba")
-      #   env:
-      #         JULIA_PKG_USE_CLI_GIT: 'true'
       - name: OpenMDAO.jl Tests
         shell: julia --color=yes {0}
         run: |
@@ -98,7 +87,7 @@ jobs:
               JULIA_PKG_USE_CLI_GIT: 'true'
 
   omjlcomps:
-    name: Python ${{ matrix.python-version }} - ${{ matrix.os }} - ${{ matrix.arch }} - ${{ github.event_name }}
+    name: Python ${{ matrix.python-version }} - ${{ matrix.os }} - ${{ github.event_name }}
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: true
@@ -107,15 +96,13 @@ jobs:
           - '1' # Leave this line unchanged. '1' will automatically expand to the latest stable 1.x release of Julia.
         os:
           - ubuntu-latest
-        arch:
-          - x64
+          - macOS-latest
         python-version: ["3.10", "3.11", "3.12", "3.13"]
     steps:
       - uses: actions/checkout@v2
       - uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.julia-version }}
-          arch: ${{ matrix.arch }}
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with:
@@ -134,11 +121,10 @@ jobs:
           cp $PWD/python/omjlcomps/test/juliapkg-test.json $PWD/python/omjlcomps/juliapkg.json
           python -m pip install --upgrade pip
           pip install juliapkg
-          pip install aviary
       - name: omjlcomps install
         run: |
           echo "PWD = $PWD"
-          pip install --config-settings editable_mode=compat -e ./python
+          pip install --config-settings editable_mode=compat -e ./python[test]
           python -c "import juliapkg; juliapkg.resolve()"
         env:
               JULIA_PKG_USE_CLI_GIT: 'true'
diff --git a/docs/src/dev_docs.md b/docs/src/dev_docs.md
index 1507325..aa7cacc 100644
--- a/docs/src/dev_docs.md
+++ b/docs/src/dev_docs.md
@@ -45,7 +45,7 @@ $
 ```
 
 For `omjlcomps`, registration is done by manually running the "Register to PyPI" workflow from the GitHub Actions tab (basically copied from [PythonCall.jl](https://github.com/cjdoris/PythonCall.jl)).
-Be sure to adjust the version in the `python/setup.py` file before registering a new version.
+Be sure to adjust the version in the `python/pyproject.toml` file before registering a new version.
 After clicking on the Actions tab on https://github.com/byuflowlab/OpenMDAO.jl, you'll see "Register to PyPI" listed under "All workflows" on the left-hand side.
 Click on that, then click on the "Run workflow" dropdown button on the right-hand side of the screen.
 Run it from the master branch, then wait for the workflow to finish.
diff --git a/python/omjlcomps/test/test_julia_explicit_comp.py b/python/omjlcomps/test/test_julia_explicit_comp.py
index 0c9f1a8..14db43f 100644
--- a/python/omjlcomps/test/test_julia_explicit_comp.py
+++ b/python/omjlcomps/test/test_julia_explicit_comp.py
@@ -3,6 +3,7 @@
 """
 import juliacall; jl = juliacall.newmodule("OpenMDAOJuliaExplicitCompTest")
 import os
+import sys
 import time
 import unittest
 
@@ -244,7 +245,10 @@ def setUp(self):
 
         if os.getenv("GITHUB_ACTIONS") == "true":
             # n_big = 1_000_000_000 is too big for GitHub Actions---it appears to consume all the virtual machine's memory and kills the job, giving me a big sad.
-            n_big = self.n_big = 100_000_000
+            if sys.platform == "darwin":
+                n_big = self.n_big = 20_000_000
+            else:
+                n_big = self.n_big = 100_000_000
         else:
             n_big = self.n_big = 500_000_000
         p_big = self.p_big = om.Problem()
diff --git a/python/setup.py.goaway b/python/setup.py.goaway
deleted file mode 100644
index 2a229ad..0000000
--- a/python/setup.py.goaway
+++ /dev/null
@@ -1,27 +0,0 @@
-from setuptools import setup
-
-from pathlib import Path
-from io import open
-
-with open(Path(__file__).parent / "README.md", encoding="utf-8") as f:
-    long_description = f.read()
-
-setup_args = {
-   'description': 'Create OpenMDAO Components using the Julia programming language',
-   'long_description': long_description,
-   'long_description_content_type': 'text/markdown',
-   'entry_points': {
-       'openmdao_component': [
-           'juliaexplicitcomp=omjlcomps:JuliaExplicitComp',
-           'juliaimplicitcomp=omjlcomps:JuliaImplicitComp'
-       ]
-    },
-   'install_requires': ['openmdao~=3.26', 'juliapkg~=0.1.10', 'juliacall~=0.9.13'],
-   'keywords': ['openmdao_component'],
-   'license': 'MIT',
-   'name': 'omjlcomps',
-   'packages': ['omjlcomps', 'omjlcomps.test'],
-   'version': '0.2.4',
-   'include_package_data': True}
-
-setup(**setup_args)