diff --git a/.github/workflows/pr_ci.yml b/.github/workflows/pull_request_checks.yml
similarity index 51%
rename from .github/workflows/pr_ci.yml
rename to .github/workflows/pull_request_checks.yml
index 78c493964..e0dfcf9a0 100644
--- a/.github/workflows/pr_ci.yml
+++ b/.github/workflows/pull_request_checks.yml
@@ -10,31 +10,36 @@ on:
 jobs:
   tests:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        py-ver: ["py39", "py310", "py311", "py312"]
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.x"
-      - name: Get week number
-        id: week
-        run: echo "week=$(date '+W%V')" >> $GITHUB_OUTPUT
-      - uses: actions/cache@v3
+      - name: Cache conda environment
+        id: conda-env-cache
+        uses: actions/cache@v3
         with:
-          key: tests|${{ runner.os }}-${{ runner.arch}}|${{ steps.week.outputs.week }}|${{ hashFiles('requirements/locks/*') }}
-          path: |
-            .tox
-            ~/.cache/pip
-      - name: Install dependencies
-        run: python3 -m pip install tox tox-conda
+          key: conda|${{runner.os}}-${{runner.arch}}|${{ hashFiles(format('requirements/locks/{0}-lock-linux-64.txt', matrix.py-ver)) }}
+          path: ~/conda-env
+      - name: Create conda environment
+        if: steps.conda-env-cache.outputs.cache-hit != 'true'
+        run: |
+          # Check cache hasn't pulled a partial key match.
+          test ! -e "${HOME}/conda-env"
+          conda create --prefix="${HOME}/conda-env" --file=requirements/locks/${{ matrix.py-ver }}-lock-linux-64.txt
+      - name: Add conda environment to PATH
+        run: echo "${HOME}/conda-env/bin" >> $GITHUB_PATH
       - name: Run tests
         env:
           PY_COLORS: "1"
-          TOX_PARALLEL_NO_SPINNER: "1"
-        run: tox -e py39-linux-tests,py310-linux-tests,py311-linux-tests,py312-linux-tests
+        run: |
+          python3 -m pip install -e .
+          pytest --verbose --cov --cov-append
+          mv .coverage ".coverage.${{ matrix.py-ver }}"
       - uses: actions/upload-artifact@v4
         with:
-          name: coverage-data
-          path: .coverage
+          name: coverage-data-${{ matrix.py-ver }}
+          path: .coverage.*
           retention-days: 1
 
   coverage-report:
@@ -45,24 +50,34 @@ jobs:
       contents: read
       pull-requests: write
     steps:
-      - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
           python-version: "3.x"
-      - name: Install dependencies
+      - name: Get week number for cache
+        id: week
+        run: echo "week=$(date '+W%V')" >> $GITHUB_OUTPUT
+      - uses: actions/cache@v3
+        with:
+          key: coverage-report|${{ env.pythonLocation }}|${{ steps.week.outputs.week }}
+          path: ~/.cache/pip
+      - name: Install coverage
         run: python3 -m pip install coverage
+      - uses: actions/checkout@v4
       - uses: actions/download-artifact@v4
         with:
-          name: coverage-data
+          pattern: coverage-data-*
+          merge-multiple: true
       - name: Generate coverage report
-        run: coverage html
+        run: |
+          coverage combine
+          coverage html
       - name: Add report to PR
         env:
           GH_TOKEN: ${{ github.token }}
         run: |
           # This links to a hosted version of the HTML report.
           tar -czf coverage-report.tar.gz htmlcov/
-          report_url="$(curl --data-binary @coverage-report.tar.gz https://tmpweb.net)"
+          report_url="$(curl -sSf --data-binary @coverage-report.tar.gz https://tmpweb.net)"
           badge_options="$(coverage json --fail-under=0 -qo - | jq -r .totals.percent_covered_display)%25-blue?style=for-the-badge"
           echo "[![Coverage](https://img.shields.io/badge/coverage-${badge_options})](${report_url})" >> ${{ runner.temp }}/cov-report.md
           # Edit last comment if it exists, else create new one.
@@ -73,12 +88,11 @@ jobs:
   pre-commit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
           python-version: "3.x"
-      - name: Get week number
+      - name: Get week number for cache
         id: week
         run: echo "week=$(date '+W%V')" >> $GITHUB_OUTPUT
       - uses: actions/cache@v3
@@ -89,6 +103,7 @@ jobs:
             ~/.cache/pre-commit
       - name: Set up pre-commit
         run: python3 -m pip install pre-commit
+      - uses: actions/checkout@v4
       - name: Run pre-commit
         run: pre-commit run --show-diff-on-failure --color=always --all-files
 
@@ -97,23 +112,28 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - name: Cache conda environment
+        id: conda-env-cache
+        uses: actions/cache@v3
         with:
-          python-version: "3.x"
-      - name: Get week number
-        id: week
-        run: echo "week=$(date '+W%V')" >> $GITHUB_OUTPUT
-      - uses: actions/cache@v3
-        with:
-          key: docs|${{ runner.os }}-${{ runner.arch}}|${{ steps.week.outputs.week }}|${{ hashFiles('requirements/locks/*') }}
-          path: |
-            .tox
-            ~/.cache/pip
-      - name: Install dependencies
-        run: python3 -m pip install tox tox-conda
-      - name: Build documentation
-        run: tox -e py312-linux-docs
-      - uses: actions/upload-artifact@v4
+          key: conda|${{runner.os}}-${{runner.arch}}|${{hashFiles('requirements/locks/py312-lock-linux-64.txt')}}
+          path: ~/conda-env
+      - name: Create conda environment
+        if: steps.conda-env-cache.outputs.cache-hit != 'true'
+        run: |
+          # Check cache hasn't pulled a partial key match.
+          test ! -e "${HOME}/conda-env"
+          conda create --prefix="${HOME}/conda-env" --file=requirements/locks/py312-lock-linux-64.txt
+      - name: Add conda environment to PATH
+        run: echo "${HOME}/conda-env/bin" >> $GITHUB_PATH
+      - name: Build documentation with Sphinx
+        run: |
+          # Install module so it can be imported during docs generation.
+          python3 -m pip install .
+          # Generate the documentation
+          sphinx-build -d "docs/build/doctree" "docs/source" "docs/build/html" --color -W -bhtml
+      - name: Upload documentation artifact
+        uses: actions/upload-artifact@v4
         with:
           name: html-docs
           path: docs/build/html/
diff --git a/pyproject.toml b/pyproject.toml
index 196f64485..010b6510c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ requires = ["setuptools>=61.0"]
 build-backend = "setuptools.build_meta"
 
 [tool.pytest.ini_options]
-addopts = ["--import-mode=importlib", "--verbose", "--cov", "--cov-append"]
+addopts = ["--import-mode=importlib"]
 filterwarnings = ['ignore::DeprecationWarning:pytest']
 minversion = "7"
 pythonpath = ["src"]