diff --git a/.github/workflows/accessibility.yml b/.github/workflows/accessibility.yml
index 614c897..dbcd2a7 100644
--- a/.github/workflows/accessibility.yml
+++ b/.github/workflows/accessibility.yml
@@ -15,7 +15,7 @@ jobs:
     name: Accessibility Audit
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v4
         with:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c11856d..2631651 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
     name: Lint & Format Check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v4
         with:
@@ -39,7 +39,7 @@ jobs:
     name: TypeScript Type Check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v4
         with:
@@ -58,7 +58,7 @@ jobs:
       matrix:
         node-version: ['18', '20']
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v4
         with:
@@ -81,7 +81,7 @@ jobs:
     name: E2E Tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v4
         with:
@@ -109,7 +109,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [lint, type-check, test]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v4
         with:
diff --git a/.github/workflows/dependency-check.yml b/.github/workflows/dependency-check.yml
index 03aecbb..57fa6f6 100644
--- a/.github/workflows/dependency-check.yml
+++ b/.github/workflows/dependency-check.yml
@@ -27,7 +27,7 @@ jobs:
     name: NPM Security Audit
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v4
         with:
@@ -63,7 +63,7 @@ jobs:
       matrix:
         language: [javascript-typescript]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v3
@@ -80,7 +80,7 @@ jobs:
     name: Outdated Dependencies
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v4
         with:
@@ -100,7 +100,7 @@ jobs:
     name: License Compliance
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v4
         with:
@@ -133,7 +133,7 @@ jobs:
     name: Secrets Detection
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -148,7 +148,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name == 'pull_request'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Dependency Review
         uses: actions/dependency-review-action@v4
diff --git a/.github/workflows/dependency-updates.yml b/.github/workflows/dependency-updates.yml
index 8429c30..fa30c33 100644
--- a/.github/workflows/dependency-updates.yml
+++ b/.github/workflows/dependency-updates.yml
@@ -11,7 +11,7 @@ jobs:
     name: Check & Update Dependencies
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
 
@@ -38,7 +38,7 @@ jobs:
     name: Verify Dependabot Config
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Check dependabot config exists
         run: |
           if [ ! -f .github/dependabot.yml ]; then
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 3c6c3f3..edba37b 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -27,7 +27,7 @@ jobs:
       sha: ${{ steps.meta.outputs.sha }}
       version: ${{ steps.meta.outputs.version }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v4
         with:
@@ -56,7 +56,7 @@ jobs:
       (github.event_name == 'push' && (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/main'))
       || (github.event_name == 'workflow_dispatch' && inputs.environment == 'staging')
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v4
         with:
@@ -98,7 +98,7 @@ jobs:
       url: ${{ steps.deploy.outputs.url }}
     if: github.event_name == 'workflow_dispatch' && inputs.environment == 'production'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v4
         with:
@@ -144,7 +144,7 @@ jobs:
       contents: read
       packages: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: docker/setup-buildx-action@v4