diff --git a/.editorconfig b/.editorconfig
index 38ecdde..ea38bae 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -14,6 +14,10 @@ charset = utf-8
 [*.py]
 max_line_length = 99
 
+# Smaller indent for TOML/YAML
+[*.{toml,yaml,yml}]
+indent_size = 2
+
 # Use 2 spaces for the HTML files
 [*.html]
 indent_size = 2
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index acd714a..3ca50ca 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,9 +16,9 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.13'
-          cache: 'pip'
-          cache-dependency-path: 'requirements/*.txt'
+          python-version: "3.13"
+          cache: "pip"
+          cache-dependency-path: "requirements/*.txt"
       - name: Run tox
         id: matrix
         run: |
@@ -45,8 +45,8 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python }}
-          cache: 'pip'
-          cache-dependency-path: 'requirements/*.txt'
+          cache: "pip"
+          cache-dependency-path: "requirements/*.txt"
       - name: Run tests
         env:
           PGHOST: localhost
@@ -57,6 +57,13 @@ jobs:
         run: |
           pip install $(grep -E "^(tox|tox-uv)==" requirements/local.txt)
           tox -e ${{ matrix.tox_env }}
+      - name: Upload coverage data
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-data-${{ matrix.tox_env }}
+          include-hidden-files: true
+          path: .coverage.*
+          if-no-files-found: ignore
     services:
       postgres:
         image: postgres:17-alpine
@@ -65,3 +72,30 @@ jobs:
         ports:
           - 5432:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
+
+  coverage:
+    name: Coverage
+    runs-on: ubuntu-24.04
+    needs: test
+    if: always()
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+          ref: ${{ github.event.pull_request.head.sha }}
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+          cache: "pip"
+          cache-dependency-path: "requirements/*.txt"
+      - uses: actions/download-artifact@v4
+        with:
+          pattern: coverage-data-*
+          merge-multiple: true
+      - name: Run coverage
+        run: |
+          pip install $(grep -E "^(tox|tox-uv)==" requirements/local.txt)
+          tox -e coverage
+          tox -qq exec -e coverage -- coverage report --format=markdown >> $GITHUB_STEP_SUMMARY
diff --git a/.gitignore b/.gitignore
index 8406517..49d6a6a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,10 +3,10 @@ MANIFEST
 dist
 build
 *.egg-info
+.*_cache
 
 # Tox
 .tox/
 .coverage
 .coverage.*
-coverage.xml
 htmlcov/
diff --git a/Makefile b/Makefile
index e905ddf..5ee1224 100644
--- a/Makefile
+++ b/Makefile
@@ -92,7 +92,7 @@ pip-install-local: venv-check
 
 
 # Coverage
-coverage-report: coverage-combine coverage-html coverage-xml
+coverage-report: coverage-combine coverage-html
 	coverage report --show-missing
 
 coverage-combine:
@@ -101,12 +101,8 @@ coverage-combine:
 coverage-html:
 	coverage html
 
-coverage-xml:
-	coverage xml
-
 coverage-clean:
 	rm -rf htmlcov
-	rm -f coverage.xml
 	rm -f .coverage
 
 
diff --git a/postgres_lock/__init__.py b/postgres_lock/__init__.py
index 485f44a..e69de29 100644
--- a/postgres_lock/__init__.py
+++ b/postgres_lock/__init__.py
@@ -1 +0,0 @@
-__version__ = "0.1.1"
diff --git a/requirements/local.txt b/requirements/local.txt
index eaaae2c..21b6f4a 100644
--- a/requirements/local.txt
+++ b/requirements/local.txt
@@ -3,5 +3,5 @@
 bump-my-version==1.2.0
 Django>=5.2,<6.0
 psycopg==3.2.9
-tox==4.26.0
-tox-uv==1.26.0
+tox==4.27.0
+tox-uv==1.26.1
diff --git a/requirements/testing.txt b/requirements/testing.txt
index de608ef..fbdf1d9 100644
--- a/requirements/testing.txt
+++ b/requirements/testing.txt
@@ -2,5 +2,5 @@ build==1.2.2.post1
 check-wheel-contents==0.6.1
 coverage==7.9.1
 pipdeptree==2.26.1
-ruff==0.11.13
+ruff==0.12.1
 twine==6.1.0