diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
deleted file mode 100644
index eccc308..0000000
--- a/.github/workflows/doc.yml
+++ /dev/null
@@ -1,31 +0,0 @@
-name: Build and Deploy MkDocs
-
-on:
-  push:
-    branches:
-      - main
-
-jobs:
-  build-and-deploy:
-    runs-on: ubuntu-latest
-
-    steps:
-    - name: Checkout code
-      uses: actions/checkout@v2
-
-    - name: Set up Python
-      uses: actions/setup-python@v2
-      with:
-        python-version: '3.x'
-
-    - name: Install MkDocs
-      run: pip install -r requirements.txt
-
-    - name: Build
-      run: mkdocs build --clean
-
-    - name: Deploy
-      uses: peaceiris/actions-gh-pages@v3
-      with:
-        github_token: ${{ secrets.GITHUB_TOKEN }}
-        publish_dir: ./site
diff --git a/.github/workflows/pypi.yml b/.github/workflows/pypi.yml
index e8f908f..0cb67a2 100644
--- a/.github/workflows/pypi.yml
+++ b/.github/workflows/pypi.yml
@@ -19,7 +19,7 @@ jobs:
 
     steps:
     # 此步骤使用 GitHub 的 https://github.com/actions/checkout
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     # 安装依赖
     - name: Install dependencies