You only have one commit incorrectly signed off! To fix, first ensure you have a local copy of your branch by [checking out the pull request locally via command line](https://help.github.com/en/github/collaborating-with-issues-and-pull-requests/checking-out-pull-requests-locally). Next, head to your local branch and run: ```bash git commit --amend --no-edit --signoff ``` Now your commits will have your sign off. Next run ```bash git push --force-with-lease origin ciborium/pr_forbidden_encodings ``` Commit sha: [c1b31a6](https://github.com/enarx/ciborium/pull/140/commits/c1b31a626664e040ee0c6b2748a265a6ea4a061e), Author: Emanuel Pilz, Committer: Emanuel Pilz; The sign-off is missing.

The following actions uses node12 which is deprecated and will be forced to run on node16: tisonkun/actions-dco@f1024cd563550b5632e754df11b7d30b73be54a5. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/