diff --git a/.github/workflows/check-release-condition.yml b/.github/workflows/check-release-condition.yml
index 8bc7c2a..2fdf0b1 100644
--- a/.github/workflows/check-release-condition.yml
+++ b/.github/workflows/check-release-condition.yml
@@ -8,7 +8,7 @@ jobs:
     if: startsWith(github.event.pull_request.title, 'release')
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Dump version
         env:
           PR_TITLE: ${{ github.event.pull_request.title }}
diff --git a/.github/workflows/release-candidate.yaml b/.github/workflows/release-candidate.yaml
index 28a89d2..57b26cd 100644
--- a/.github/workflows/release-candidate.yaml
+++ b/.github/workflows/release-candidate.yaml
@@ -20,7 +20,7 @@ jobs:
           tar zxvf git-chglog*.tar.gz
           sudo ln /usr/local/src/git-chglog /bin/git-chglog
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: '0'
       - name: Create release branch
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index e5fea79..587b7ec 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -20,12 +20,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout mkdocs
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: squidfunk/mkdocs-material
 
       - name: Checkout action
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           path: .github/actions/mkdocs-builder
 
diff --git a/.github/workflows/version-tag.yml b/.github/workflows/version-tag.yml
index 844f811..d59663c 100644
--- a/.github/workflows/version-tag.yml
+++ b/.github/workflows/version-tag.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: tag
         run: |
           git remote set-url origin https://${{ secrets.GITHUB_TOKEN }}@github.com/${GITHUB_REPOSITORY}.git