diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 43695d8..48a3a2e 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -15,7 +15,7 @@ jobs:
     name: Lint & Format
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v5
@@ -35,7 +35,7 @@ jobs:
     name: Type Check (mypy)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v5
@@ -57,7 +57,7 @@ jobs:
         python-version: ["3.11", "3.12"]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
@@ -97,7 +97,7 @@ jobs:
     name: Security Scan
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v5
@@ -114,7 +114,7 @@ jobs:
     name: dbt Compile & Test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v5
@@ -141,7 +141,7 @@ jobs:
     name: Docker Build Validation
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Build PyFlink image
         run: docker build -t streamflow/pyflink:ci -f docker/flink/Dockerfile .
@@ -156,7 +156,7 @@ jobs:
     name: K8s Manifest Validation
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install kubeval
         run: |
diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
index fcf8032..174d734 100644
--- a/.github/workflows/deploy.yaml
+++ b/.github/workflows/deploy.yaml
@@ -28,7 +28,7 @@ jobs:
     name: Pre-deploy Validation
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v5
@@ -56,7 +56,7 @@ jobs:
     environment: ${{ github.event.inputs.environment }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up SSH
         run: |
@@ -122,7 +122,7 @@ jobs:
     environment: ${{ github.event.inputs.environment }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up SSH
         run: |