# 5.100. Release Notes for Buildbot 0.9.0b5

The following are the release notes for Buildbot 0.9.0b5. This version was released on October 21, 2015.

See Upgrading to Buildbot 0.9.0 for a guide to upgrading from 0.8.x to 0.9.x

## 5.100.1. Master

This version addresses http://trac.buildbot.net/wiki/SecurityAlert090b4 by preventing dissemination of hook information via the web UI.

This also reverts the addition of the frontend data service in 0.9.0b4, as that contained many bugs. It will be re-landed in a subsequent release.

## 5.100.2. Slave

No changes.

For a more detailed description of the changes made in this version, see the git log itself:

    git log v0.9.0b4..0.9.0b5