Postgresql & PGPool packages minor version different on Standby server

Hi All,

We have Postgresql 9.5 Cluster with streaming replication and pgpool. The
version of Postgres is 9.5.5 and Pgpool-II version 3.2.15.

There is now hardware issue with the Standby Machine and it won't startup
so we are building new Standby machine.

My question is about the minor version of postgresql 9.5 available now. On
postgresql repository site, I can't see postgres 9.5.5 and Pgpool-II-3.2.15
instead there are 9.5.13 and PGpool-II-3.5.15

Is it safe and fine to have postgres 9.5.5 and pgpool-II-3.2.15 on Master &
postgres 9.5.13 and Pgpool-II-3.5.15 on Standby ?
Please let me know.

I know the postgres don't keep minor version in PG_VERSION file in data
directory so should It be ok to use different minor versions on master &
standby?

Thanks in advance.

Regards
Vikas