diff --git a/.forgejo/workflows/grade.yml b/.forgejo/workflows/grade.yml
index ec53f28..2592b0d 100644
--- a/.forgejo/workflows/grade.yml
+++ b/.forgejo/workflows/grade.yml
@@ -13,7 +13,7 @@ jobs:
     container:
       image: gitea/runner-images:ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: https://data.forgejo.org/actions/checkout@v6
       - name: Grade (blank fails, solved passes)
         run: |
           docker run --rm --network=none \