diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e3c1042..66184cf 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
         python-version: ['3.10', '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
@@ -41,7 +41,7 @@ jobs:
     if: github.ref == 'refs/heads/main'
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Check Dockerfile exists
       id: check_dockerfile