https://github.com/mhenrixon/sidekiq-unique-jobs/issues/730#issuecomment-1199914616 It seems that redis-namespace doesn't support kwargs that the redis-rb gem uses. For example for brpoplpush like described by @cgunther in https://github.com/mhenrixon/sidekiq-unique-jobs/issues/730#issuecomment-1199880690. I can replicate it, and I'd prefer to avoid using a deprecated API (the integer as the second argument) if I can avoid it. Perhaps you could look into supporting keyword arguments as the redis-rb gem does?