PgBouncer - HA Mode

Team,

we are using PgBouncer for connection pooling, now all are application is connecting database via PgBouncer. However I need suggestion, if some how VM goes down or something goes wrong with PgBouncer, how can we handle that situation. We observe that currently its a single point of failure for all application if PgBouncer goes down. 

Is there any kind of load balancer or replicate the PgBouncer ti manage the high availability?

Thanks in advance.