diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 91aa0bf..9b5f848 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Run markdownlint-cli
         uses: nosborn/github-action-markdown-cli@v3.5.0
         with:
@@ -37,7 +37,7 @@ jobs:
           - '21'
           - '24'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up JDK ${{ matrix.java-version }}
         uses: actions/setup-java@v4
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index a883a12..5c6e1ed 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -17,7 +17,7 @@ jobs:
     if: ${{ github.event.workflow_run.conclusion == 'success' && github.event.workflow_run.event == 'push' && startsWith(github.event.workflow_run.head_branch, 'v') }}
     steps:
       - name: Check out the repository including tags
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.event.workflow_run.head_sha }}
           fetch-depth: 0
@@ -52,7 +52,7 @@ jobs:
     if: ${{ needs.validate-tag.outputs.valid_tag == 'true' && github.event.workflow_run.conclusion == 'success' }}
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up JVM
         uses: actions/setup-java@v4
         with:
diff --git a/.github/workflows/sync-test-fixtures.yml b/.github/workflows/sync-test-fixtures.yml
index 57e8e12..b04fa76 100644
--- a/.github/workflows/sync-test-fixtures.yml
+++ b/.github/workflows/sync-test-fixtures.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Sync fixtures
         run: |
           TMP_DIR=$(mktemp -d)
diff --git a/.github/workflows/update-gradle-wrapper.yml b/.github/workflows/update-gradle-wrapper.yml
index 40d0abb..8afee3b 100644
--- a/.github/workflows/update-gradle-wrapper.yml
+++ b/.github/workflows/update-gradle-wrapper.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Update Gradle Wrapper
         uses: gradle-update/update-gradle-wrapper-action@v2
         with: