diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index 672e78e..05b03ef 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -1,6 +1,8 @@
 name: Python Package
 
 on:
+  workflow_dispatch:
+  pull_request:
   push:
     branches:
       - '*'
@@ -8,6 +10,74 @@ on:
       - '*'
 
 jobs:
+  mypy-required:
+    runs-on: 'ubuntu-latest'
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Workaround for worktree config
+        run: git config --unset-all extensions.worktreeConfig || true
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.10"
+          cache: "pip"
+
+      - name: Install Python packages
+        run: |
+          python -m pip install -e .
+          python -m pip install mypy
+
+      - name: Mypy on required files
+        uses: tsuyoshicho/action-mypy@v5
+        with:
+          github_token: ${{ secrets.github_token }}
+          # Change reviewdog reporter if you need [github-pr-check,github-check,github-pr-review].
+          reporter: github-check
+          setup_method: nothing
+          target: --config-file=pyproject.toml
+          fail_on_error: true
+          install_types: false
+
+  mypy-modified:
+    runs-on: 'ubuntu-latest'
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Workaround for worktree config
+        run: git config --unset-all extensions.worktreeConfig || true
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.10"
+          cache: "pip"
+
+      - name: Install Python packages
+        run: |
+          python -m pip install -e .
+          python -m pip install mypy
+
+      - name: Mypy on modified files
+        uses: tsuyoshicho/action-mypy@v5
+        with:
+          github_token: ${{ secrets.github_token }}
+          # Change reviewdog reporter if you need [github-pr-check,github-check,github-pr-review].
+          reporter: github-check
+          setup_method: nothing
+          level: warning
+          fail_on_error: false
+          install_types: false
+  
   build:
     runs-on: ubuntu-latest
     name: Wheel
@@ -42,7 +112,9 @@ jobs:
   pypi:
     runs-on: 'ubuntu-latest'
     needs:
+      - mypy-required
       - build
+    if: ${{ github.event_name != 'pull_request' }}
 
     steps:
       - name: Download all the dists
diff --git a/.github/workflows/workflow-validate.yml b/.github/workflows/workflow-validate.yml
new file mode 100644
index 0000000..fb419ab
--- /dev/null
+++ b/.github/workflows/workflow-validate.yml
@@ -0,0 +1,33 @@
+name: Check Workflow Files
+
+on:
+  push:
+    branches:
+      - main
+
+  merge_group:
+  pull_request:
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  actions:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - name: Install action-validator with asdf
+        uses: asdf-vm/actions/install@v3
+        with:
+          tool_versions: |
+            action-validator 0.5.1
+
+      - name: Lint Actions
+        run: |
+          find .github/workflows -type f \( -iname \*.yaml -o -iname \*.yml \) \
+            | xargs -I {} action-validator --verbose {}
\ No newline at end of file
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 8bb3555..fc18165 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -4,7 +4,7 @@
 repos:
 -   repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: v0.2.2
+    rev: v0.8.3
     hooks:
       - id: ruff
         args: [ --fix, --exit-non-zero-on-fix ]