diff --git a/.github/workflows/auto-label.yml b/.github/workflows/auto-label.yml
index 6706bd4..dc66f4b 100644
--- a/.github/workflows/auto-label.yml
+++ b/.github/workflows/auto-label.yml
@@ -16,7 +16,7 @@ jobs:
     
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Auto-label based on PR content
         uses: actions/github-script@v7
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b2a514d..55f0748 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,7 +26,7 @@ jobs:
     
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Detect package managers
         id: detect
@@ -44,7 +44,7 @@ jobs:
     
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Node.js
         uses: actions/setup-node@v4
@@ -76,7 +76,7 @@ jobs:
     
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Python
         uses: actions/setup-python@v5
@@ -111,7 +111,7 @@ jobs:
     
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Go
         uses: actions/setup-go@v6
@@ -131,7 +131,7 @@ jobs:
     
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Check for trailing whitespace
         run: |
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 7bf0e59..7de3dc9 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -25,7 +25,7 @@ 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/markdown-lint.yml b/.github/workflows/markdown-lint.yml
index ab33434..74d8ac0 100644
--- a/.github/workflows/markdown-lint.yml
+++ b/.github/workflows/markdown-lint.yml
@@ -25,7 +25,7 @@ jobs:
     
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0