Targeting Kafka1.1 version

[peeyar]

My kafka version in the brokers are kafka 1.1 . How do I change the kafka targeted version to 1.1..?

[WorkerThread-1] INFO org.apache.kafka.common.utils.AppInfoParser - Kafka version : 2.0.0
[WorkerThread-1] INFO org.apache.kafka.common.utils.AppInfoParser - Kafka commitId : 3402a8361b734732
[WorkerThread-2] INFO org.apache.kafka.common.utils.AppInfoParser - Kafka version : 2.0.0
[kafka-producer-network-thread | producer-4] WARN org.apache.kafka.clients.NetworkClient - [Producer clientId=producer-4] Connection to node -1 could not be established. Broker may not be available.