Patroni basebackup server compression not working in 4.1.1

Hi,

I am not able to enable basebackup server compression feature, which is new
in patroni 4.1.1.
OS: OEL 9.7
Patroni version: patroni-4.1.1-1PGDG.rhel9.7.noarch
Postgres: postgresql18-server-18.3-1PGDG.rhel9.7.x86_64
The following setting has been added to DCS under postgresql:
basebackup:
  - compress: server-zstd
I still get the following error in the patroni.log:
2026-04-22 02:51:44,693 ERROR: compress option for basebackup is not allowed
2026-04-22 02:51:44,693 ERROR: Error when parsing basebackup key-value
option server-zstd: only one key-value is allowed and value should be a
string

Has anyone been able to confirm that the feature is working?

Best regards,
Radu