diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6d752e1..e0cd622 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
     name: lint · typecheck · test · acceptance
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v4
         with: