diff --git a/.github/workflows/actionlint.yml b/.github/workflows/actionlint.yml
new file mode 100644
index 0000000..8dd1596
--- /dev/null
+++ b/.github/workflows/actionlint.yml
@@ -0,0 +1,16 @@
+name: Lint GitHub Actions workflows
+
+on:
+  pull_request:
+    paths:
+      - .github/workflows/*.yml
+
+jobs:
+  actionlint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Check workflow files
+        uses: reviewdog/action-actionlint@v1
diff --git a/.github/workflows/gh-deploy.yml b/.github/workflows/gh-deploy.yml
index 9aea5b6..93f5020 100644
--- a/.github/workflows/gh-deploy.yml
+++ b/.github/workflows/gh-deploy.yml
@@ -33,12 +33,13 @@ jobs:
         uses: ./.github/actions/setup-python-with-uv
 
       - name: Generate cache id
-        run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV
+        id: cache
+        run: echo "id=$(find docs -type f -print0 | sort -z | xargs -0 sha256sum mkdocs.yml pyproject.toml uv.lock | sha256sum | awk '{print $1}')" >> "$GITHUB_OUTPUT"
 
       - name: Save cache
         uses: actions/cache@v5
         with:
-          key: mkdocs-material-${{ env.cache_id }}
+          key: mkdocs-material-${{ steps.cache.outputs.id }}
           path: .cache
           restore-keys: mkdocs-material-
 
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index b76b7d5..f2b3c89 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -52,6 +52,11 @@ repos:
         language: python
         types: [python]
 
+  - repo: https://github.com/rhysd/actionlint
+    rev: v1.7.10
+    hooks:
+      - id: actionlint
+
   - repo: https://github.com/hadolint/hadolint
     rev: v2.12.0
     hooks:
diff --git a/.vscode/cspell.json b/.vscode/cspell.json
index 1aa71c5..8ec5de8 100644
--- a/.vscode/cspell.json
+++ b/.vscode/cspell.json
@@ -87,6 +87,7 @@
         "pyupgrade",
         "qodo",
         "redoc",
+        "reviewdog",
         "rootdir",
         "ropeproject",
         "scrapy",
diff --git a/CLAUDE.md b/CLAUDE.md
index ade777d..69de42a 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -252,6 +252,7 @@ When adding new utilities to `tools/`, add corresponding documentation to `docs/
 ## CI/CD Workflows
 
 GitHub Actions workflows in `.github/workflows/`:
+- **actionlint.yml**: Lint GitHub Actions workflows
 - **docker.yml**: Validate Docker build
 - **devcontainer.yml**: Validate Dev Container configuration
 - **format.yml**: Check Ruff formatting
diff --git a/docs/configurations/index.md b/docs/configurations/index.md
index 5153c64..c81e2bc 100644
--- a/docs/configurations/index.md
+++ b/docs/configurations/index.md
@@ -17,15 +17,15 @@ Each tool is configured through dedicated configuration files in the repository
 
 ## Configuration Files
 
-| File | Tool | Purpose |
-|------|------|---------|
-| `pyproject.toml` | uv, Project | Dependencies and project metadata |
-| `ruff.toml` | Ruff | Linting and formatting rules |
-| `ty.toml` | ty | Type checking configuration |
-| `.sqlfluff` | SQLFluff | SQL linting and formatting rules |
-| `pytest.ini` | pytest | Testing and coverage settings |
-| `.pre-commit-config.yaml` | pre-commit | Hook definitions |
-| `noxfile.py` | nox | Task automation |
+| File                      | Tool        | Purpose                           |
+| ------------------------- | ----------- | --------------------------------- |
+| `pyproject.toml`          | uv, Project | Dependencies and project metadata |
+| `ruff.toml`               | Ruff        | Linting and formatting rules      |
+| `ty.toml`                 | ty          | Type checking configuration       |
+| `.sqlfluff`               | SQLFluff    | SQL linting and formatting rules  |
+| `pytest.ini`              | pytest      | Testing and coverage settings     |
+| `.pre-commit-config.yaml` | pre-commit  | Hook definitions                  |
+| `noxfile.py`              | nox         | Task automation                   |
 
 ## Quick Links
 
diff --git a/docs/configurations/pre-commit.md b/docs/configurations/pre-commit.md
index b276b52..6d3912d 100644
--- a/docs/configurations/pre-commit.md
+++ b/docs/configurations/pre-commit.md
@@ -13,6 +13,8 @@
 - [https://github.com/sqlfluff/sqlfluff](https://github.com/sqlfluff/sqlfluff)
     - SQLFluff Lint
     - SQLFluff Fix
+- [https://github.com/rhysd/actionlint](https://github.com/rhysd/actionlint)
+    - actionlint
 - [https://github.com/hadolint/hadolint](https://github.com/hadolint/hadolint)
     - Hadolint
 
@@ -44,6 +46,11 @@ repos:
         name: Ruff format
         description: "Run 'ruff format' for extremely fast Python formatting"
 
+  - repo: https://github.com/rhysd/actionlint
+    rev: v1.7.10
+    hooks:
+      - id: actionlint
+
   - repo: https://github.com/hadolint/hadolint
     rev: v2.12.0
     hooks:
diff --git a/docs/guides/index.md b/docs/guides/index.md
index badcb91..cafe22f 100644
--- a/docs/guides/index.md
+++ b/docs/guides/index.md
@@ -10,6 +10,7 @@ This template includes several modern Python development tools, each serving a s
 - **Ruff** - Lightning-fast linting and formatting
 - **ty** - Advanced type checking
 - **SQLFluff** - SQL linting and formatting
+- **actionlint** - GitHub Actions workflow linting
 - **pytest** - Comprehensive testing framework
 - **nox** - Task automation and workflow management
 - **pre-commit** - Automated code quality checks
diff --git a/docs/index.md b/docs/index.md
index 48bcc8c..25bda19 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -15,6 +15,7 @@ This repository provides a complete, batteries-included development environment
 - **Ultra-fast package management** - [uv](https://github.com/astral-sh/uv) is 10-100x faster than pip
 - **Lightning-fast code quality** - [Ruff](https://github.com/astral-sh/ruff) replaces Black, isort, Flake8, and more
 - **SQL linting** - [SQLFluff](https://github.com/sqlfluff/sqlfluff) for SQL code quality
+- **GitHub Actions linting** - [actionlint](https://github.com/rhysd/actionlint) for workflow file quality
 - **Type safety** - ty for comprehensive type checking
 - **Automated testing** - pytest with 75% coverage requirement
 - **Task automation** - nox for streamlined development workflows