diff --git a/cookiecutter.json b/cookiecutter.json
index 0791efc..0a9db92 100644
--- a/cookiecutter.json
+++ b/cookiecutter.json
@@ -11,6 +11,8 @@
     "use_bsd3_licence": false,
     "add_precommit_workflows": true,
     "automerge_bot_prs": false,
+    "use_windows_ci_runner": false,
+    "use_macos_ci_runner": false,
     "__prompts__": {
         "project_name": "Enter a human-readable name for the project",
         "project_slug": "Enter a name for the Python package",
@@ -20,6 +22,8 @@
         "packaging": "Select the Python packaging tool you wish to use",
         "use_bsd3_licence": "Whether to use Imperial's default open-source licence (BSD 3-clause)",
         "add_precommit_workflows": "Add Github Actions to run pre-commit hooks (only needed for private repositories)",
+        "use_windows_ci_runner": "Add a GitHub Actions runner for Windows (needed if your software targets Windows)",
+        "use_macos_ci_runner": "Add a GitHub Actions runner for macOS (needed if your software targets macOS - ARM)",
         "automerge_bot_prs": "Whether to automatically merge PRs from bots including dependabot"
     }
 }
diff --git a/{{ cookiecutter.project_slug }}/.github/workflows/ci.yml b/{{ cookiecutter.project_slug }}/.github/workflows/ci.yml
index 14b529e..09f48cf 100644
--- a/{{ cookiecutter.project_slug }}/.github/workflows/ci.yml	
+++ b/{{ cookiecutter.project_slug }}/.github/workflows/ci.yml	
@@ -12,7 +12,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [windows-latest, ubuntu-latest, macos-latest]
+        os:
+          - ubuntu-latest
+{%- if cookiecutter.use_windows_ci_runner %}
+          - windows-latest
+{%- endif %}
+{%- if cookiecutter.use_macos_ci_runner %}
+          - macos-latest{% endif %}
         python-version: ['3.12']
 
     steps:
diff --git a/{{ cookiecutter.project_slug }}/dev-requirements.txt b/{{ cookiecutter.project_slug }}/dev-requirements.txt
index eefb1cc..a5941de 100644
--- a/{{ cookiecutter.project_slug }}/dev-requirements.txt	
+++ b/{{ cookiecutter.project_slug }}/dev-requirements.txt	
@@ -16,7 +16,7 @@ coverage[toml]==7.6.0
     # via pytest-cov
 distlib==0.3.8
     # via virtualenv
-filelock==3.13.1
+filelock==3.15.4
     # via
     #   pytest-mypy
     #   virtualenv
@@ -32,7 +32,7 @@ mypy-extensions==1.0.0
     # via mypy
 nodeenv==1.9.1
     # via pre-commit
-packaging==24.0
+packaging==24.1
     # via
     #   build
     #   pytest
@@ -62,11 +62,11 @@ pytest-mypy==0.10.3
     # via datahub (pyproject.toml)
 pyyaml==6.0.1
     # via pre-commit
-ruff==0.5.4
+ruff==0.5.6
     # via datahub (pyproject.toml)
-typing-extensions==4.9.0
+typing-extensions==4.12.2
     # via mypy
-virtualenv==20.26.1
+virtualenv==20.26.3
     # via pre-commit
 wheel==0.43.0
     # via pip-tools