ef=/v1.9/news/security/istio-security-2021-001>our March 1st, 2021 news post</a>
as well as bug fixes to improve robustness.</p><p>This release note describes what’s different between Istio 1.9.0 and Istio 1.9.1.</p><div><aside class="callout tip"><div class=type><svg class="large-icon"><use xlink:href="/v1.9/img/icons.svg#callout-tip"/></svg></div><div class=content>Qualification testing for this release completed successfully on March 3rd, 2021.</div></aside></div><div class="relnote-actions call-to-act