Is were removed in Kafka 4.0.
        For more information about the compatibility, please refer to the <a href="/{{version}}/documentation/compatibility.html">compatibility matrix</a>
        or <a href="https://cwiki.apache.org/confluence/x/y4kgF">KIP-1124</a>.</li>
</ol>

<h5><a id="upgrade_4_0_0" href="#upgrade_4_0_0">Upgrading Servers to 4.0.0 from any version 3.3.x through 3.9.x</a></h5>

<p>Note: Apache Kafka 4.0 only supports KRaft mode - ZooKeeper mode has been removed. As such, <b>broker upgrades 