diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fc231cf..abc0077 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     name: Backend Lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@stable
         with:
           components: rustfmt, clippy
@@ -32,7 +32,7 @@ jobs:
     name: Backend Tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
         with:
@@ -47,7 +47,7 @@ jobs:
     name: Frontend Lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-node@v4
         with:
           node-version: "22"
@@ -70,7 +70,7 @@ jobs:
     name: Frontend Tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-node@v4
         with:
           node-version: "22"
@@ -88,7 +88,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [backend-lint, backend-test, frontend-lint, frontend-test]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Build Docker image
         run: docker build -t fullstack-app:ci .
 
@@ -98,7 +98,7 @@ jobs:
   #   needs: [build-docker]
   #   if: github.ref == 'refs/heads/main' && github.event_name == 'push'
   #   steps:
-  #     - uses: actions/checkout@v4
+  #     - uses: actions/checkout@v6
   #     - name: Log in to container registry
   #       run: echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login registry.example.com -u "${{ secrets.REGISTRY_USERNAME }}" --password-stdin
   #     - name: Build and push