diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index f92fe45..13f0979 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: recursive
 
diff --git a/.github/workflows/format.yaml b/.github/workflows/format.yaml
index b558fa2..bb6fb22 100644
--- a/.github/workflows/format.yaml
+++ b/.github/workflows/format.yaml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup Python
         uses: actions/setup-python@v6