diff --git a/.github/workflows/activity-report.yml b/.github/workflows/activity-report.yml
index 0b00206..e6a14e5 100644
--- a/.github/workflows/activity-report.yml
+++ b/.github/workflows/activity-report.yml
@@ -17,7 +17,7 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Download external script
diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index 58d0fa2..9d503e3 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -25,7 +25,7 @@ jobs:
       id-token: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 1
 
diff --git a/.github/workflows/docker-build-push.yml b/.github/workflows/docker-build-push.yml
index c9882a0..36139b2 100644
--- a/.github/workflows/docker-build-push.yml
+++ b/.github/workflows/docker-build-push.yml
@@ -21,7 +21,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     
     - name: Extract version from package.json
       id: version