diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index efc4e69..0000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,130 +0,0 @@
-version: 2.1
-
-orbs:
-  codecov: codecov/codecov@3.2.2
-
-references:
-  install_dependencies: &install_dependencies
-    name: Install dependencies
-    command: |
-      python -m pip install --progress-bar off -U virtualenv --user
-      mkdir -p ./venv
-      python -m virtualenv ./venv --clear
-      . venv/bin/activate
-      python -m pip install --progress-bar off -U -r requirements/requirements-testing.txt
-
-  run_tests: &run_tests
-    name: run tests
-    command: |
-      # Run with coverage
-      . venv/bin/activate
-      python -m pytest -v --cov=rowan/ --cov-report=xml
-
-jobs:
-  linux-python-39:
-    docker:
-      - image: cimg/python:3.9
-    working_directory: ~/repo
-    steps:
-      - checkout
-      - run:
-          <<: *install_dependencies
-      - run:
-          <<: *run_tests
-
-  linux-python-310:
-    docker:
-      - image: cimg/python:3.10
-    working_directory: ~/repo
-    steps:
-      - checkout
-      - run:
-          <<: *install_dependencies
-      - run:
-          <<: *run_tests
-
-  linux-python-311:
-    docker:
-      - image: cimg/python:3.11
-    working_directory: ~/repo
-    steps:
-      - checkout
-      - run:
-          <<: *install_dependencies
-      - run:
-          <<: *run_tests
-
-  linux-python-312:
-    docker:
-      - image: cimg/python:3.12
-    working_directory: ~/repo
-    steps:
-      - checkout
-      - run:
-          <<: *install_dependencies
-      - run:
-          <<: *run_tests
-
-  linux-oldest:
-    # Run tests against a set of the oldest dependencies we support.
-    docker:
-      - image: cimg/python:3.8
-    working_directory: ~/repo
-    steps:
-      - checkout
-      - run:
-          name: Install oldest dependencies
-          command: |
-            python -m pip install --progress-bar off -U virtualenv --user
-            mkdir -p ./venv
-            python -m virtualenv ./venv --clear
-            . venv/bin/activate
-            python -m pip install --progress-bar off -U -r .circleci/oldest-test-reqs.txt
-            python -m pip install --progress-bar off -U pytest
-      - run:
-          name: run tests
-          command: |
-            . venv/bin/activate
-            python -m pytest -v tests
-
-  build_and_deploy:
-    docker:
-      - image: cimg/python:3.12
-    working_directory: ~/repo
-    steps:
-      - checkout
-      - run:
-          <<: *install_dependencies
-      - run:
-          <<: *run_tests
-      - run:
-          name: Deploy dist and wheels
-          command: |
-            . venv/bin/activate
-            python -m pytest -v tests
-            python --version
-            python -m pip --version
-            python -m pip install --progress-bar off --user -U twine build
-            python -m twine --version
-            python -m build .
-            twine upload --username ${PYPI_USERNAME} --password ${PYPI_PASSWORD} dist/*
-
-workflows:
-  version: 2
-  testing:
-    jobs:
-      - linux-python-39
-      - linux-python-310
-      - linux-python-311
-      - linux-python-312:
-          post-steps:
-            - codecov/upload
-      - linux-oldest
-  deploy:
-    jobs:
-      - build_and_deploy:
-          filters:
-            tags:
-              only: /^v.*/
-            branches:
-              ignore: /.*/
diff --git a/.circleci/oldest-test-reqs.txt b/.circleci/oldest-test-reqs.txt
deleted file mode 100644
index 89cf986..0000000
--- a/.circleci/oldest-test-reqs.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-numpy==1.21
-scipy==1.7
diff --git a/requirements/requirements-testing.txt b/requirements/requirements-testing.txt
deleted file mode 100644
index e3e34f0..0000000
--- a/requirements/requirements-testing.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-coverage==6.3.2
-numpy>=1.15.0
-pytest==7.0.1
-pytest-cov==3.0.0
-scipy>=1.0.0