diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a1cd56a..dd61034 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,7 +24,7 @@ jobs:
           --health-timeout 5s
           --health-retries 5
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-go@v5
         with:
@@ -67,7 +67,7 @@ jobs:
     name: Frontend
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v4
         with:
@@ -87,7 +87,7 @@ jobs:
     name: Docker build check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: docker/setup-buildx-action@v3
 
diff --git a/.github/workflows/k8s-test.yml b/.github/workflows/k8s-test.yml
index efcf5ee..bbd5b21 100644
--- a/.github/workflows/k8s-test.yml
+++ b/.github/workflows/k8s-test.yml
@@ -30,7 +30,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Verify tools
         run: |
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 7f7e700..c78bc78 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -13,7 +13,7 @@ jobs:
       contents: read
       packages: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: docker/setup-buildx-action@v3
 
@@ -48,7 +48,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install Helm
         uses: azure/setup-helm@v4
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index 041873d..fea6427 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -11,7 +11,7 @@ jobs:
     name: Go Dependency Audit
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-go@v5
         with:
           go-version: "1.22"
@@ -25,7 +25,7 @@ jobs:
     name: Node Dependency Audit
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-node@v4
         with:
           node-version: "20"
@@ -42,7 +42,7 @@ jobs:
     name: Secret Scan (git history)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Scan for secrets in git history