diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 81912f1..b80e32f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -28,7 +28,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
       
     - name: Set up Python
       uses: actions/setup-python@v5
@@ -59,7 +59,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
       
     - name: Run security scan
       uses: pypa/gh-action-pip-audit@v1.1.0
@@ -93,7 +93,7 @@ jobs:
         
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
       
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v5
@@ -127,7 +127,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
       
     - name: Set up Python
       uses: actions/setup-python@v5
@@ -173,7 +173,7 @@ jobs:
           
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
       
     - name: Set up Python
       uses: actions/setup-python@v5
@@ -208,7 +208,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
       
     - name: Set up Python
       uses: actions/setup-python@v5