diff --git a/.github/workflows/link-check.yml b/.github/workflows/link-check.yml
new file mode 100644
index 0000000..4547782
--- /dev/null
+++ b/.github/workflows/link-check.yml
@@ -0,0 +1,19 @@
+name: Link Check
+
+on:
+  push:
+    branches: [ main, master ]
+  pull_request:
+  schedule:
+    - cron: "0 3 * * 1"
+
+jobs:
+  link-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: lycheeverse/lychee-action@v2
+        with:
+          args: --no-progress README.md docs/ apps/ examples/ benchmarks/
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/packages/leann-backend-diskann/third_party/DiskANN b/packages/leann-backend-diskann/third_party/DiskANN
index af2a264..67a2611 160000
--- a/packages/leann-backend-diskann/third_party/DiskANN
+++ b/packages/leann-backend-diskann/third_party/DiskANN
@@ -1 +1 @@
-Subproject commit af2a26481e65232b57b82d96e68833cdee9f7635
+Subproject commit 67a2611ad14bc11d84dfdb554c5567cfb78a2656
diff --git a/pyproject.toml b/pyproject.toml
index 906593e..d3b42e3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -134,6 +134,14 @@ dev = [
     "ruff>=0.12.4",
 ]
 
+[tool.lychee]
+accept = ["200", "403", "429", "503"]
+timeout = 20
+max_retries = 2
+exclude = ["localhost", "127.0.0.1", "example.com"]
+exclude_path = [".git/", ".venv/", "__pycache__/", "third_party/"]
+scheme = ["https", "http"]
+
 [tool.pytest.ini_options]
 testpaths = ["tests"]
 python_files = ["test_*.py"]