Can I choose which PostgreSQL version is used by barman?

I installed barman on the same server as my production database. Perhaps not a good choice but it is that way. I use barman to make backups of the production database and of databases on other servers. Some of those databases are for development. When there is a new version of PostgreSQL I first migrate the development databases to test the upgrade and some applications. When this is done, I do the production database as the last one. During this time I want to continue to do backups of all of my databases. This is only possible if barman uses the new version. I thought that I could resolve this by installing the new version on the server that runs barman. I can see that after the installation that the psql used is from that version. But barman says that it uses the version from the production database. Is there a way to tell barman which PostgreSQL version it should use?