Amazon MQ now provides support for RabbitMQ version 3.11.28, which includes several fixes and performance improvements to the previous versions of RabbitMQ supported by Amazon MQ. If you are running earlier versions of RabbitMQ, such as 3.10, 3.9 or 3.8, we strongly encourage you to upgrade to RabbitMQ 3.11.28 or higher. This can be accomplished with just a few clicks in the AWS Management Console. We also encourage you to enable automatic minor version upgrades on RabbitMQ 3.11.28 to help ensure your brokers take advantage of future fixes and improvements.
Source:: Amazon AWS