No refresh token when using Passwordless/OTP grant through SMS

Hi!

I’m trying to setup the passwordless/otp flow for my react native app and everything works except for the refresh tokens which are not included in the response from Auth0 API.

These are the exact requests:

POST: https://{AUTH0_DOMAIN}/passwordless/start
{
  "client_id": "My Id",
  "connection": "sms",
  "phone_number": "+46XXXXXXXX", 
  "send": "code", 
  "authParams": { 
    "scope": "openid profile email offline_access"
  }
}

POST: https://{AUTH0_DOMAIN}/oauth/token
{
  "grant_type" : "http://auth0.com/oauth/grant-type/passwordless/otp",
  "client_id": "My Id",
  "username":"+46XXXXXXXX", 
  "otp": "XXXX",
  "realm": "sms", 
  "audience" : "https://{OUR_DOMAIN}.se",
  "scope": "openid profile email offline_access" 
}

Does anyone know how to include the refresh token in the response? I’m currently getting the following response:

{
"access_token": "eyJhbGciOiJSUzI...",
"id_token": "eyJhbGciOiJSUzI...",
"scope": "openid profile email",
"expires_in": 86400,
"token_type": "Bearer"
}