diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 66923af..6bf138f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
       matrix:
         python-version: ['3.10', '3.11', '3.12']
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
@@ -28,7 +28,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: actions/setup-python@v5
       with:
         python-version: '3.11'
@@ -38,7 +38,7 @@ jobs:
   security:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: actions/setup-python@v5
       with:
         python-version: '3.11'
@@ -52,7 +52,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [test, lint, security]
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: actions/setup-python@v5
       with:
         python-version: '3.11'