How to upgrade Kafka 0.8.1 to 0.8.1.1

I have planned to upgrade Kafka version from 0.8.1 to 0.8.1.1 due major
bugs.

Is there any procedure link to upgrade Kafka 0.8.1 to 0.8.1.1 ?

Please share details to upgrade kafka 0.8.1.1.

Thanks in Advance,