prebuild: Error when uploading to GitHub release: "Error from GitHub: Validation Failed"

Hey folks, I’m running prebuild on CI after not having used it in a while and I’m getting this error when prebuild tries to upload assets to a GitHub release:

prebuild ERR! build Error: Error from GitHub: Validation Failed
prebuild ERR! build     at responseHandler (C:\projects\node-pty-prebuilt\node_modules\ghutils\ghutils.js:25:23)
prebuild ERR! build     at BufferList._callback (C:\projects\node-pty-prebuilt\node_modules\jsonist\jsonist.js:61:7)
prebuild ERR! build     at BufferList.end (C:\projects\node-pty-prebuilt\node_modules\bl\bl.js:105:10)
prebuild ERR! build     at DuplexWrapper.onend (C:\projects\node-pty-prebuilt\node_modules\hyperquest\node_modules\readable-stream\lib\_stream_readable.js:537:10)
prebuild ERR! build     at Object.onceWrapper (events.js:273:13)
prebuild ERR! build     at DuplexWrapper.emit (events.js:187:15)
prebuild ERR! build     at C:\projects\node-pty-prebuilt\node_modules\hyperquest\node_modules\readable-stream\lib\_stream_readable.js:934:16
prebuild ERR! build     at process._tickCallback (internal/process/next_tick.js:61:11)
Command exited with code 2

I’ve recreated the GitHub token I’m using in CI to upload the releases so it shouldn’t be an authentication issue. Any idea what might be causing this?