diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0df9b7e..d985987 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -5,18 +5,26 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ '3.8', '3.9', '3.10', '3.11', ]
+        python-version: [ '3.10', '3.11', '3.12' ]
     name: Python ${{ matrix.python-version }}
     steps:
       - uses: actions/checkout@v3
+
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
           architecture: x64
+
       - name: Install
-        run: pip install .
-      - name: Test
-        run: python run_tests.py
+        run: pip install .[development]
 
+      - name: Lint
+        run: |
+          ruff format . --check
+          ruff check .
 
+      - name: Test
+        run: |
+          python run_tests.py
+          python tests/data_schemas.py
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index e5f4b7f..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,21 +0,0 @@
-dist: xenial
-language: python
-python:
-  - '3.4'
-  - '3.5'
-  - '3.6'
-  - '3.7'
-  - '3.8'
-matrix:
-  include:
-    - python: '3.8'
-      env: BLACK=1
-install:
-  - pip install --upgrade pip
-  - pip install -e .[testing]
-script:
-  - coverage run --source=uk_election_ids ./run_tests.py
-  - sh -c "if [ '$BLACK' = '1' ]; then pip install black ; fi"
-  - sh -c "if [ '$BLACK' = '1' ]; then black --check . ; fi"
-after_success:
-  - coveralls
diff --git a/README.md b/README.md
index dd5869a..0007245 100644
--- a/README.md
+++ b/README.md
@@ -4,12 +4,10 @@ Create and validate Democracy Club Election Identifiers.
 
 ---
 
-[![Build Status](https://travis-ci.org/DemocracyClub/uk-election-ids.svg?branch=master)](https://travis-ci.org/DemocracyClub/uk-election-ids)
-[![Coverage Status](https://coveralls.io/repos/github/DemocracyClub/uk-election-ids/badge.svg?branch=master)](https://coveralls.io/github/DemocracyClub/uk-election-ids?branch=master)
+[![Run tests](https://github.com/DemocracyClub/uk-election-ids/actions/workflows/test.yml/badge.svg)](https://github.com/DemocracyClub/uk-election-ids/actions/workflows/test.yml)
 ![PyPI Version](https://img.shields.io/pypi/v/uk-election-ids.svg)
 ![License](https://img.shields.io/pypi/l/uk-election-ids.svg)
 ![Python Support](https://img.shields.io/pypi/pyversions/uk-election-ids.svg)
-![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)
 
 * Installation: `pip install uk-election-ids`
 * [Documentation](https://democracyclub.github.io/uk-election-ids/)
diff --git a/build.sh b/build.sh
deleted file mode 100755
index b0a0417..0000000
--- a/build.sh
+++ /dev/null
@@ -1,7 +0,0 @@
-#!/bin/bash
-
-set -e
-
-pip install "setuptools>=38.6.0"
-pip install "twine>=1.11.0"
-python setup.py sdist
diff --git a/dev-requirements.txt b/dev-requirements.txt
deleted file mode 100644
index 68b252b..0000000
--- a/dev-requirements.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-pre-commit==3.5.0
-ruff==0.3.7
diff --git a/setup.py b/setup.py
index d4b6b84..76ce6b4 100644
--- a/setup.py
+++ b/setup.py
@@ -28,23 +28,24 @@ def _get_description():
     long_description_content_type="text/markdown",
     extras_require={
         "testing": ["coveralls"],
+        "docs": [
+            "sphinx==7.1.2",
+            "sphinx_rtd_theme==2.0.0",
+            "ghp-import==2.1.0",
+        ],
         "development": [
-            "sphinx",
-            "sphinx_rtd_theme",
-            "ghp-import",
-            "pydantic",
-            "black==23.3.0",
-            "ruff==0.0.261",
+            "pydantic==1.10.18",
+            "pre-commit==3.5.0",
+            "ruff==0.3.7",
         ],
     },
     classifiers=[
         "License :: OSI Approved :: MIT License",
         "Programming Language :: Python",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.8",
-        "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
     ],
     project_urls={
         "Documentation": "https://democracyclub.github.io/uk-election-ids/",
diff --git a/tests/data_schemas.py b/tests/data_schemas.py
index 709ed12..e62840e 100644
--- a/tests/data_schemas.py
+++ b/tests/data_schemas.py
@@ -39,12 +39,13 @@ def _recurse_defaults(d: dict):
         _recurse_defaults(values["defaults"])
         return values
 
-        # import ipdb; ipdb.set_trace()
-        # return super().validate(value)
-
 
 if __name__ == "__main__":
-    data = Path(__file__).parent / "voting_systems.json"
+    data = (
+        Path(__file__).parent.parent
+        / "uk_election_ids"
+        / "data"
+        / "voting_systems.json"
+    )
     schema = VotingSystemSchema.parse_file(data)
     VotingSystemSchema.validate(schema)
-    # print(schema)
diff --git a/tests/test_slugger.py b/tests/test_slugger.py
index 843ed9d..2ca7f30 100644
--- a/tests/test_slugger.py
+++ b/tests/test_slugger.py
@@ -6,7 +6,6 @@
 
 
 class TestSlugify(TestCase):
-
     """
     For this particular use-case, we are primarily concerned with
     1. Slugging characters that appear in names of places in the UK sensibly
diff --git a/uk_election_ids/parser.py b/uk_election_ids/parser.py
index 52ddb2d..95239a3 100644
--- a/uk_election_ids/parser.py
+++ b/uk_election_ids/parser.py
@@ -4,7 +4,6 @@
 
 
 class DataPackageParser:
-
     """
     Parser which uses the data in datapackage.py to build
     a dict of IdSpec() objects which describe what sort of