Permission denied error - best way to fix?

Here's the error:

pg_dump: SQL command failed
pg_dump: Error message from server: ERROR:  permission denied for
relation pantryitems
pg_dump: The command was: LOCK TABLE public.pantryitems IN ACCESS SHARE MODE

Does the user need to be a superuser, or is there some way to GRANT
this permission (if possible, I don't want this user to be able to
modify the schema)..

Mike