Unable to `CREATE EXTENSION postgres_fdw`

Hello!
I'm trying the

postgres_fdw

postgres_fdw

feature on my free-trial cluster with my automatically created user. However, the feature requires

superuser

superuser

to create the extension first, so it failed. Is this expected or any suggestion for this?

CREATE EXTENSION postgres_fdw;
ERROR:  permission denied to create extension "postgres_fdw"
HINT:  Must be superuser to create this extension.

CREATE EXTENSION postgres_fdw;
ERROR:  permission denied to create extension "postgres_fdw"
HINT:  Must be superuser to create this extension.