---
title: Announcing Istio 1.1.15
linktitle: 1.1.15
subtitle: Patch Release
description: Istio 1.1.15 patch release.
publishdate: 2019-09-16
release: 1.1.15
aliases:
    - /about/notes/1.1.15
    - /blog/2019/announcing-1.1.15
    - /news/2019/announcing-1.1.15
    - /news/announcing-1.1.15
---

We're pleased to announce the availability of Istio 1.1.15. Please see below for what's changed.

{{< relnote >}}

## Bug fixes

- Fix an Envoy crash introduced in Istio 1.1.14 ([Issue 16357](https://github.com/istio/istio/issues/16357)).

## Small enhancements

- Expose `HTTP/2` window size settings as Pilot environment variables ([Issue 17117](https://github.com/istio/istio/issues/17117)).
