diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fe085a3..d46cb62 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
       matrix:
         python-version: ["3.11", "3.12"]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
@@ -44,7 +44,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name == 'pull_request'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - uses: wagoid/commitlint-github-action@v6
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 553abd7..f0ab311 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -18,7 +18,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v5
diff --git a/.github/workflows/frontend.yml b/.github/workflows/frontend.yml
index a7d765f..3982a16 100644
--- a/.github/workflows/frontend.yml
+++ b/.github/workflows/frontend.yml
@@ -24,7 +24,7 @@ jobs:
       run:
         working-directory: frontend
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-node@v4
         with:
           node-version: "22"
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index 509576e..1980a77 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name == 'pull_request'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/dependency-review-action@v4
         with:
           fail-on-severity: moderate
@@ -34,7 +34,7 @@ jobs:
       matrix:
         language: ["python", "javascript-typescript"]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: github/codeql-action/init@v3
         with:
           languages: ${{ matrix.language }}
@@ -47,7 +47,7 @@ jobs:
     name: Trivy filesystem scan
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: aquasecurity/trivy-action@v0.36.0
         with:
           scan-type: fs
@@ -60,7 +60,7 @@ jobs:
     name: Python dependency audit
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v5
         with:
           python-version: "3.12"
@@ -72,7 +72,7 @@ jobs:
     name: Secret scan
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - uses: gitleaks/gitleaks-action@v2
diff --git a/.github/workflows/vercel.yml b/.github/workflows/vercel.yml
index b7860ea..f279184 100644
--- a/.github/workflows/vercel.yml
+++ b/.github/workflows/vercel.yml
@@ -33,7 +33,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-node@v4
         with:
           node-version: "22"
@@ -71,7 +71,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name == 'push' && github.ref == 'refs/heads/main'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-node@v4
         with:
           node-version: "22"