---
title: Next-Gen WAF Heroku Buildpack 0.2.0
summary: null
url: >-
  https://www.fastly.com/documentation/reference/changes/2020/06/ngwaf-heroku-buildpack-0.2.0
---

- Added `SIGSCI_HEROKU_BIND_RACE_WORKAROUND=1` configuration to work around a
  race condition where the app might consume the listener port before the `sigsci-agent` can
  start listening
- Fixed the health check not starting and not logging to stderr (enabled with `SIGSCI_HC=true`)
- Cleaned up the startup script and added more debugging output when setting `SIGSCI_HEROKU_BUILDPACK_DEBUG=2`