> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://buildwithfern.com/learn/llms.txt. ## 0.40.9 **`(fix):`** Fix multipart file-upload endpoints with binary responses to use streaming method, and fix file-upload endpoints with query parameters to bind the query-folded envelope type instead of the bare body type. Both issues caused cargo build failures on endpoints like ElevenLabs speech-to-speech (multipart + binary response + query params).