diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 0cae82b..9158fa8 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -31,8 +31,8 @@ jobs:
           - runner: ubuntu-latest
             target: aarch64
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
         with:
           python-version: 3.14
       - name: Build wheels
@@ -45,7 +45,7 @@ jobs:
           sccache: 'true'
           manylinux: auto
       - name: Upload wheels
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: wheels-linux-${{ matrix.platform.target }}
           path: dist
@@ -63,7 +63,7 @@ jobs:
           pytest
       - name: pytest
         if: ${{ !startsWith(matrix.platform.target, 'x86') && matrix.platform.target != 'ppc64' }}
-        uses: uraimo/run-on-arch-action@v2
+        uses: uraimo/run-on-arch-action@v3
         env:
           PYO3_USE_ABI3_FORWARD_COMPATIBILITY: 1
         with:
@@ -91,8 +91,8 @@ jobs:
           - runner: ubuntu-latest
             target: aarch64
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
         with:
           python-version: 3.14
       - name: Build wheels
@@ -105,13 +105,13 @@ jobs:
           sccache: 'true'
           manylinux: musllinux_1_2
       - name: Upload wheels
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: wheels-musllinux-${{ matrix.platform.target }}
           path: dist
       - name: pytest
         if: ${{ !startsWith(matrix.platform.target, 'x86') }}
-        uses: uraimo/run-on-arch-action@v2
+        uses: uraimo/run-on-arch-action@v3
         env:
           PYO3_USE_ABI3_FORWARD_COMPATIBILITY: 1
         with:
@@ -138,8 +138,8 @@ jobs:
           - runner: windows-latest
             target: x86
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
         with:
           python-version: 3.14
           architecture: ${{ matrix.platform.target }}
@@ -152,7 +152,7 @@ jobs:
           args: --release --out dist --find-interpreter
           sccache: 'true'
       - name: Upload wheels
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: wheels-windows-${{ matrix.platform.target }}
           path: dist
@@ -175,8 +175,8 @@ jobs:
           - runner: macos-14
             target: aarch64
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
         with:
           python-version: 3.14
       - name: Build wheels
@@ -188,7 +188,7 @@ jobs:
           args: --release --out dist --find-interpreter
           sccache: 'true'
       - name: Upload wheels
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: wheels-macos-${{ matrix.platform.target }}
           path: dist
@@ -203,17 +203,55 @@ jobs:
           pip install pytest
           pytest
 
+  pytest:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install package and test dependencies
+        run: python -m pip install -e .[test]
+      - name: Run pytest
+        run: pytest
+
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
+        with:
+          python-version: "3.12"
+      - name: Install package and test dependencies
+        run: python -m pip install -e .[test]
+      - name: Run coverage
+        run: pytest --cov=e57 --cov-report=term-missing --cov-report=xml --cov-report=html
+      - name: Generate markdown coverage report
+        run: python -m coverage report --format=markdown > coverage.md
+      - name: Upload coverage artifacts
+        uses: actions/upload-artifact@v7
+        with:
+          name: coverage-reports
+          path: |
+            coverage.xml
+            coverage.md
+            htmlcov/
+
   sdist:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Build sdist
         uses: PyO3/maturin-action@v1
         with:
           command: sdist
           args: --out dist
       - name: Upload sdist
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: wheels-sdist
           path: dist
@@ -231,9 +269,9 @@ jobs:
       # Used to generate artifact attestation
       attestations: write
     steps:
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v8
       - name: Generate artifact attestation
-        uses: actions/attest-build-provenance@v1
+        uses: actions/attest-build-provenance@v4
         with:
           subject-path: 'wheels-*/*'
       - name: Publish to PyPI
diff --git a/pyproject.toml b/pyproject.toml
index cb25851..5744eac 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,6 +26,7 @@ classifiers = [
 [project.optional-dependencies]
 test = [
     'pytest>=9,<10',
+    'pytest-cov>=5,<7',
 ]
 
 [project.urls]