diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index 03e865aa..aaf615ef 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -26,7 +26,7 @@ jobs:
       actions: read # Required for Claude to read CI results on PRs
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 1
 
diff --git a/.github/workflows/sync-index.yml b/.github/workflows/sync-index.yml
index 7d71840c..2e63ebb1 100644
--- a/.github/workflows/sync-index.yml
+++ b/.github/workflows/sync-index.yml
@@ -20,7 +20,7 @@ jobs:
     
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup Node.js
         uses: actions/setup-node@v6
diff --git a/.github/workflows/validate-links.yml b/.github/workflows/validate-links.yml
index 1389ef81..fefea7ab 100644
--- a/.github/workflows/validate-links.yml
+++ b/.github/workflows/validate-links.yml
@@ -16,7 +16,7 @@ jobs:
   validate-links:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       
       - uses: oven-sh/setup-bun@v2
 
diff --git a/.github/workflows/verify-build.yml b/.github/workflows/verify-build.yml
index 8b371628..8767aa1d 100644
--- a/.github/workflows/verify-build.yml
+++ b/.github/workflows/verify-build.yml
@@ -14,7 +14,7 @@ jobs:
     
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup Node.js
         uses: actions/setup-node@v6