diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index fc5a95f1..063d4bed 100644
--- a/.github/workflows/pages.yml
+++ b/.github/workflows/pages.yml
@@ -14,6 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Sphinx docs to gh-pages
     steps:
+      - uses: actions/checkout@v4
       - name: Setup Mambaforge
         uses: conda-incubator/setup-miniconda@v3
         with:
diff --git a/.github/workflows/test_code.yml b/.github/workflows/test_code.yml
index 5704937d..24cf1b36 100644
--- a/.github/workflows/test_code.yml
+++ b/.github/workflows/test_code.yml
@@ -79,7 +79,7 @@ jobs:
         run: |
           make uv venv gmsh
           make ${{ matrix.plugin }}
-          uv pip install -e .[dev,gmsh]  --with setuptools
+          uv pip install -e .[dev,gmsh]
       - name: Test with pytest
         env:
           GDSFACTORY_DISPLAY_TYPE: klayout
diff --git a/pyproject.toml b/pyproject.toml
index 14d7a038..e7271194 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,6 +42,7 @@ dev = [
   "pytest-cov",
   "pytest_regressions",
   "pyswarms",
+  "ray",
   "autograd"
 ]
 devsim = [
diff --git a/uv.lock b/uv.lock
index e47b98f7..ff360f1f 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1501,6 +1501,7 @@ dev = [
     { name = "pytest" },
     { name = "pytest-cov" },
     { name = "pytest-regressions" },
+    { name = "ray" },
 ]
 devsim = [
     { name = "devsim" },
@@ -1625,6 +1626,7 @@ requires-dist = [
     { name = "pyvista", marker = "extra == 'devsim'", specifier = "<=0.43.8" },
     { name = "pyvista", marker = "extra == 'gmsh'", specifier = "<=0.43.8" },
     { name = "pyvista", extras = ["all"], marker = "extra == 'docs'", specifier = "<=0.43.8" },
+    { name = "ray", marker = "extra == 'dev'" },
     { name = "sax", marker = "extra == 'sax'", specifier = ">=0.13.1,<0.15.0" },
     { name = "scikit-learn", marker = "extra == 'sax'" },
     { name = "shapely", marker = "extra == 'gfviz'" },
@@ -4518,6 +4520,40 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/74/ab/df8d889fd01139db68ae9e5cb5c8f0ea016823559a6ecb427582d52b07dc/qrcode-8.0-py3-none-any.whl", hash = "sha256:9fc05f03305ad27a709eb742cf3097fa19e6f6f93bb9e2f039c0979190f6f1b1", size = 45710 },
 ]
 
+[[package]]
+name = "ray"
+version = "2.40.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "aiosignal" },
+    { name = "click" },
+    { name = "filelock" },
+    { name = "frozenlist" },
+    { name = "jsonschema" },
+    { name = "msgpack" },
+    { name = "packaging" },
+    { name = "protobuf" },
+    { name = "pyyaml" },
+    { name = "requests" },
+]
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/ca/42/492dc35c112c5adbcf258066d739f897f484b6e2aff29b28dd9ebc9832d4/ray-2.40.0-cp310-cp310-macosx_10_15_x86_64.whl", hash = "sha256:064af8bc52cc988c82470b8e76e5df417737fa7c1d87f597a892c69eb4ec3caa", size = 67061821 },
+    { url = "https://files.pythonhosted.org/packages/07/c2/0847df9d81524ceafe0fafcddce9e4e4799501807687759d2c48f1b34f43/ray-2.40.0-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:45beb4019cd20b6cb10572d8012c771bccd623f544a669da6797ccf993c4bb33", size = 64422550 },
+    { url = "https://files.pythonhosted.org/packages/62/e7/cf468bfb109d904cc5b7650d890f7c4284842d72acf65b1ae05a5c02c2e5/ray-2.40.0-cp310-cp310-manylinux2014_aarch64.whl", hash = "sha256:6cede5fbf7de4fae22cebe2c6977aaf3c85fde6f7de2aa10c46992cf24ea8bda", size = 65916634 },
+    { url = "https://files.pythonhosted.org/packages/31/73/6763d7f87756816698fa5f841ba590a869e821a46c0a98d848055ea831bb/ray-2.40.0-cp310-cp310-manylinux2014_x86_64.whl", hash = "sha256:f6eab11dc8490f88e78e06aa645905b259cde1fa03b15e8426155c4782ba0bbe", size = 66845129 },
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+]
+
 [[package]]
 name = "rectangle-packer"
 version = "2.0.2"