diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 434d36a5..a80bb2f2 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
       with:
         fetch-depth: 0  # Need full history for comparison
     
@@ -147,7 +147,7 @@ jobs:
     if: github.event_name == 'pull_request'
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Set up Go
       uses: actions/setup-go@v5
@@ -188,7 +188,7 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Set up Go
       uses: actions/setup-go@v5
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f7c0572a..a432f29a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
         go-version: ['1.25', '1.26']
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Set up Go
       uses: actions/setup-go@v5
@@ -57,7 +57,7 @@ jobs:
     name: Lint
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Set up Go
       uses: actions/setup-go@v5
@@ -94,7 +94,7 @@ jobs:
             arch: arm64
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Set up Go
       uses: actions/setup-go@v5
@@ -123,7 +123,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: test
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Set up Go
       uses: actions/setup-go@v5
@@ -150,7 +150,7 @@ jobs:
     name: Integration Tests
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Set up Go
       uses: actions/setup-go@v5
diff --git a/.github/workflows/quality.yml b/.github/workflows/quality.yml
index c7a89bdb..5a17ef12 100644
--- a/.github/workflows/quality.yml
+++ b/.github/workflows/quality.yml
@@ -15,7 +15,7 @@ jobs:
       security-events: write
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Set up Go
       uses: actions/setup-go@v5
@@ -50,7 +50,7 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Set up Go
       uses: actions/setup-go@v5
@@ -91,7 +91,7 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Set up Go
       uses: actions/setup-go@v5
@@ -112,7 +112,7 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Set up Go
       uses: actions/setup-go@v5
@@ -135,7 +135,7 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Set up Go
       uses: actions/setup-go@v5
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b6b7266d..737d4a7e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -13,7 +13,7 @@ jobs:
     name: Test Before Release
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Set up Go
       uses: actions/setup-go@v5
@@ -48,7 +48,7 @@ jobs:
             arch: amd64
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Set up Go
       uses: actions/setup-go@v5
@@ -94,7 +94,7 @@ jobs:
     needs: build
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Download all artifacts
       uses: actions/download-artifact@v4
@@ -125,7 +125,7 @@ jobs:
     needs: test
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Set up QEMU
       uses: docker/setup-qemu-action@v3
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index bf3c37ed..7688f6ba 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -17,7 +17,7 @@ jobs:
       contents: read
       security-events: write
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Run Gosec Security Scanner
       uses: securego/gosec@master
@@ -33,7 +33,7 @@ jobs:
     name: Vulnerability Check
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Set up Go
       uses: actions/setup-go@v5
@@ -55,7 +55,7 @@ jobs:
       security-events: write
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v3
@@ -74,7 +74,7 @@ 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
@@ -88,7 +88,7 @@ jobs:
       contents: read
       security-events: write
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     
     - name: Run Trivy vulnerability scanner
       uses: aquasecurity/trivy-action@master