diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2ef2c6f..ac4de71 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Install ShellCheck
         run: sudo apt-get update && sudo apt-get install -y shellcheck
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Install dependencies
         run: sudo apt-get update && sudo apt-get install -y bats jq bc
@@ -38,7 +38,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Python
         uses: actions/setup-python@v5
@@ -54,7 +54,7 @@ jobs:
     needs: [shellcheck, unit-tests, static-checks]
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Install runtime dependencies
         run: |
@@ -82,7 +82,7 @@ jobs:
     if: ${{ vars.HPC_ENABLE_GPU_CI == '1' }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Run quick on GPU host
         run: sudo bash scripts/run-all.sh --quick --ci
diff --git a/.github/workflows/dependency-update.yml b/.github/workflows/dependency-update.yml
index d8aaa4a..f32c04b 100644
--- a/.github/workflows/dependency-update.yml
+++ b/.github/workflows/dependency-update.yml
@@ -22,7 +22,7 @@ jobs:
       pr_branch: ${{ steps.pr.outputs.branch }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Python
         uses: actions/setup-python@v5
@@ -152,7 +152,7 @@ jobs:
     runs-on: [self-hosted, linux, x64, gpu, nvidia]
     steps:
       - name: Checkout update branch
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: ${{ needs.check-and-pr.outputs.pr_branch }}