diff --git a/.github/workflows/build-kiosk.yml b/.github/workflows/build-kiosk.yml
index b77e1b1..a95b755 100644
--- a/.github/workflows/build-kiosk.yml
+++ b/.github/workflows/build-kiosk.yml
@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up JDK 17
         uses: actions/setup-java@v4
diff --git a/.github/workflows/build-scale-gateway.yml b/.github/workflows/build-scale-gateway.yml
index ee67630..0d522a0 100644
--- a/.github/workflows/build-scale-gateway.yml
+++ b/.github/workflows/build-scale-gateway.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up JDK 17
         uses: actions/setup-java@v4
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8edda6a..0b083f2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
     name: PHP Syntax Check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
@@ -27,7 +27,7 @@ jobs:
     name: JavaScript Lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Check JS syntax
         run: |
@@ -37,7 +37,7 @@ jobs:
     name: Docker Build Test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Build Docker image
         run: docker build -t evershelf-test .
@@ -53,7 +53,7 @@ jobs:
     name: Validate Translation Files
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Validate JSON syntax
         run: |
@@ -99,7 +99,7 @@ jobs:
       contents: write
     steps:
       - name: Checkout (full history)
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -133,7 +133,7 @@ jobs:
       contents: write
     steps:
       - name: Checkout main
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: main
           fetch-depth: 0
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index 9df2c1d..c31a59d 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -22,7 +22,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Build Docker image
         run: docker build -t evershelf:scan .
@@ -51,7 +51,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Run Trivy filesystem scanner
         uses: aquasecurity/trivy-action@v0.36.0