According to [Trunks & Tidbits March 2025](https://blog.joinmastodon.org/2025/04/trunk-tidbits-march-2025/), Mastodon now makes use of a Deprecation header as defined in [RFC 9745](https://datatracker.ietf.org/doc/html/rfc9745) ([documentation](https://docs.joinmastodon.org/api/guidelines/#deprecations)). Check if we can/should make use of this header somehow.