On behalf of the maintainers team I'm happy to announce that bytestring-0.11.4.0 (http://hackage.haskell.org/package/bytestring-0.11.4.0) is finally released. Highlights from the changelog ( https://github.com/haskell/bytestring/blob/0.11.4.0/Changelog.md): * A serious bug in `instance Lift ShortByteString` has been fixed. * `Builder` literals no longer break `warp` versions older than 3.3.22 by demanding too large of a buffer. * `unsafeIndex` is once again exported from Data.ShortByteString.Internal. * Many operations on `ShortByteString` have been made much more efficient. Many people contributed their time and effort to make this release happen. Thanks to all of them! Just to name a few, in no particular order: * Alexander Biehl * Xia Li-yao * Sergey Vinokurov * Viktor Dukhovni * Julian Ospald * Andreas Klebinger * Simon Jakobi * Andrew Lelechenko * every contributor to the older bytestring releases Happy Haskelling! ~-Matthew Craven (Hopefully the send is successful this time!)