diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 878639a..1c73916 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -13,7 +13,7 @@ jobs:
     steps:
       # https://github.com/actions/checkout
       - name: checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       # https://github.com/pre-commit/action
       - name: run pre-commit