diff --git a/.github/workflows/jekyll.yml b/.github/workflows/jekyll.yml
index b8a3924..3e5ca59 100644
--- a/.github/workflows/jekyll.yml
+++ b/.github/workflows/jekyll.yml
@@ -15,7 +15,7 @@ jobs:
         ruby: ['3.0']
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
diff --git a/.github/workflows/pdd.yml b/.github/workflows/pdd.yml
index 0dbf079..4e10eb1 100644
--- a/.github/workflows/pdd.yml
+++ b/.github/workflows/pdd.yml
@@ -7,5 +7,5 @@ jobs:
   pdd:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: g4s8/pdd-action@master
diff --git a/.github/workflows/xcop.yml b/.github/workflows/xcop.yml
index ee7da74..ff18a21 100644
--- a/.github/workflows/xcop.yml
+++ b/.github/workflows/xcop.yml
@@ -7,5 +7,5 @@ jobs:
   xcop:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: g4s8/xcop-action@master