diff --git a/.github/workflows/ci-cd.yml b/.github/workflows/ci-cd.yml
index a57b3d1..1424fc9 100644
--- a/.github/workflows/ci-cd.yml
+++ b/.github/workflows/ci-cd.yml
@@ -24,7 +24,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       with:
         fetch-depth: 0
     
@@ -101,7 +101,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
@@ -157,7 +157,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     
     - name: Set up Python
       uses: actions/setup-python@v5
@@ -190,7 +190,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     
     - name: Run Trivy vulnerability scanner
       uses: aquasecurity/trivy-action@master
@@ -215,7 +215,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     
     - name: Set up Python
       uses: actions/setup-python@v5
@@ -242,7 +242,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     
     - name: Set up Python
       uses: actions/setup-python@v5
@@ -299,7 +299,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     
     - name: Deploy to development
       run: |
@@ -320,7 +320,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     
     - name: Deploy to production
       run: |
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b3625b1..16985f7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ jobs:
   backend:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-python@v5
         with:
           python-version: '3.12'
@@ -32,7 +32,7 @@ jobs:
       run:
         working-directory: frontend/react-dashboard
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
           node-version: '20.x'
@@ -63,7 +63,7 @@ jobs:
   smoke:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
       - name: Build lightweight stack
diff --git a/.github/workflows/docker-images.yml b/.github/workflows/docker-images.yml
index 7d583b1..a988f73 100644
--- a/.github/workflows/docker-images.yml
+++ b/.github/workflows/docker-images.yml
@@ -12,7 +12,7 @@ jobs:
       contents: read
       packages: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
diff --git a/.github/workflows/docker-lightweight.yml b/.github/workflows/docker-lightweight.yml
index 6a98f57..8bcb922 100644
--- a/.github/workflows/docker-lightweight.yml
+++ b/.github/workflows/docker-lightweight.yml
@@ -10,7 +10,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
       - name: Build lightweight image
diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index 0a8fdae..3f2266d 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -12,7 +12,7 @@ jobs:
       contents: read
       packages: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
       - name: Log in to GHCR
diff --git a/.github/workflows/make-tests.yml b/.github/workflows/make-tests.yml
index 1956b16..b2a0f9e 100644
--- a/.github/workflows/make-tests.yml
+++ b/.github/workflows/make-tests.yml
@@ -8,7 +8,7 @@ jobs:
   make-test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-python@v5
         with:
           python-version: '3.11'
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 961f21a..cf5237c 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -9,7 +9,7 @@ jobs:
   nightly-check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
           node-version: '18'
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 9e60ebf..0b5f336 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -9,7 +9,7 @@ jobs:
   pypi:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-python@v5
         with:
           python-version: '3.12'
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index cf76601..637290f 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -11,7 +11,7 @@ jobs:
   dependency-audit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-python@v5
         with:
           python-version: '3.12'
@@ -26,7 +26,7 @@ jobs:
   trivy-fs:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Run Trivy filesystem scan
         uses: aquasecurity/trivy-action@0.20.0
         with:
diff --git a/.github/workflows/spark-image.yml b/.github/workflows/spark-image.yml
index d00aee8..32813af 100644
--- a/.github/workflows/spark-image.yml
+++ b/.github/workflows/spark-image.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
diff --git a/.github/workflows/spark-train-image.yml b/.github/workflows/spark-train-image.yml
index 04e4d41..2d5162d 100644
--- a/.github/workflows/spark-train-image.yml
+++ b/.github/workflows/spark-train-image.yml
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 3fd6136..f7bb65f 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -11,7 +11,7 @@ jobs:
       matrix:
         python-version: ["3.11", "3.12"]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}