diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7fa89da..a19b005 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     name: Lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v2
         with:
           version: 8
@@ -29,7 +29,7 @@ jobs:
     name: Type Check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v2
         with:
           version: 8
@@ -44,7 +44,7 @@ jobs:
     name: Unit Tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v2
         with:
           version: 8
@@ -61,7 +61,7 @@ jobs:
     name: URL Tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v2
         with:
           version: 8
@@ -80,7 +80,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 15
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v2
         with:
           version: 8
@@ -117,7 +117,7 @@ jobs:
       matrix:
         browser: [firefox, webkit]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v2
         with:
           version: 8
@@ -148,7 +148,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [lint, typecheck, test, test-urls, e2e]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v2
         with:
           version: 8
@@ -165,7 +165,7 @@ jobs:
     name: Security Audit
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v2
         with:
           version: 8
@@ -184,7 +184,7 @@ jobs:
     needs: [build]
     if: github.event_name == 'push' && github.ref == 'refs/heads/main'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Lighthouse CI
         uses: treosh/lighthouse-ci-action@v12
         with:
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index decd1e4..acdfc8e 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v3
diff --git a/.github/workflows/deploy-preview.yml b/.github/workflows/deploy-preview.yml
index cb2c29e..16f04f7 100644
--- a/.github/workflows/deploy-preview.yml
+++ b/.github/workflows/deploy-preview.yml
@@ -10,7 +10,7 @@ jobs:
     timeout-minutes: 15
     if: github.event.deployment_status.state == 'success' && github.event.deployment_status.environment == 'Preview'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       
       - uses: pnpm/action-setup@v2
         with:
diff --git a/.github/workflows/e2e-scheduled.yml b/.github/workflows/e2e-scheduled.yml
index c659d72..0f5bd2e 100644
--- a/.github/workflows/e2e-scheduled.yml
+++ b/.github/workflows/e2e-scheduled.yml
@@ -30,7 +30,7 @@ jobs:
       matrix:
         browser: [chromium, firefox, webkit]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       
       - uses: pnpm/action-setup@v2
         with:
@@ -63,7 +63,7 @@ jobs:
     name: URL Health Check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       
       - uses: pnpm/action-setup@v2
         with: