---
title: "Acquia Cloud - December 23, 2019"
date: "2025-09-12T05:57:24+00:00"
summary: "Acquia Cloud update: HMAC authentication deprecation notice. Learn about upcoming changes to Cloud API v2 authentication."
image:
type: "announcement"
url: "/acquia-cloud-platform/release/2019-12-23/77011-acquia-cloud-december-23-2019"
id: "045947bc-3aa1-40d5-8d5e-f1dc46776263"
---

Important

HMAC authentication is deprecated and will be removed from [Cloud API version 2](/acquia-cloud-platform/develop-apps/api/auth) on April 15, 2020.