diff --git a/.github/workflows/add-git-tag.yaml b/.github/workflows/add-git-tag.yaml
index 7ddb567..e3a3a3d 100644
--- a/.github/workflows/add-git-tag.yaml
+++ b/.github/workflows/add-git-tag.yaml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Add tag
         if: startsWith(github.event.pull_request.title, 'release') && github.event.pull_request.merged == true
         env:
diff --git a/.github/workflows/check-release-condition.yaml b/.github/workflows/check-release-condition.yaml
index e19d25e..6071fd5 100644
--- a/.github/workflows/check-release-condition.yaml
+++ b/.github/workflows/check-release-condition.yaml
@@ -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 9b8d145..0d45111 100644
--- a/.github/workflows/release-candidate.yaml
+++ b/.github/workflows/release-candidate.yaml
@@ -19,7 +19,7 @@ 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/sync-branch-master-main.yaml b/.github/workflows/sync-branch-master-main.yaml
index e2d8a13..50f0360 100644
--- a/.github/workflows/sync-branch-master-main.yaml
+++ b/.github/workflows/sync-branch-master-main.yaml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: '0'
       - name: Setup remote repository
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index aa39fb1..ecce4d3 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -24,14 +24,14 @@ jobs:
         target: [alpine, debian]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Build docker image
         env:
           DOCKER_LABEL: ${{ matrix.target }}
         run: |
           docker build -t $DOCKER_USERNAME/$DOCKER_IMAGENAME:$DOCKER_LABEL -f $DOCKER_LABEL/Dockerfile .
       - name: Checkout mkdocs
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: squidfunk/mkdocs-material
           path: mkdocs-material