The HTTP headers for rate limiting changed during drafting... https://datatracker.ietf.org/doc/html/draft-ietf-httpapi-ratelimit-headers-04 ... https://datatracker.ietf.org/doc/html/draft-ietf-httpapi-ratelimit-headers-07 There is this issue describing the header changes https://github.com/ietf-wg-httpapi/ratelimit-headers/issues/131 When the standard got released, there is the need to adopt this.