Terraform queue skills block error with CX as Code provider

Trying to define a queue with skills in Terraform. The docs show a skills block, but the provider rejects it. Here’s the config:

resource "genesyscloud_routing_queue" "test" {
 name = "Support"
 skills {
 skill_id = "123"
 }
}

Error says An argument or block definition is required. I’ve tried skill_ids too. Is this version mismatch? Using provider v1.2.0.