diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2f23ef2..8140672 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
         python-version: ["3.12"]
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v6
diff --git a/.github/workflows/e2e-test.yml b/.github/workflows/e2e-test.yml
index 8d9232d..049bde9 100644
--- a/.github/workflows/e2e-test.yml
+++ b/.github/workflows/e2e-test.yml
@@ -31,7 +31,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Set up Python
       uses: actions/setup-python@v6
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index 7dba69a..34e9317 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -11,7 +11,7 @@ jobs:
   security:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           ref: ${{ github.event.pull_request.head.sha || github.sha }}
           fetch-depth: 2