OpenApi v. 3.0.1 specification is recognised as OpenApi v.2 specification

I am uploading a REST API specification to Swaggerhub through the Rest API of SwaggerHub. Although the specification is writter in accoring to OpenApi v.3.0.1, Swaggerhub opens it with the version 2 editor. When I open the file I get the message "Update Editor to OpenAPI 3.0?" How can I specify the Open API version of a file that I am sending through the REST APi of Swaggerhub, so that when I open the specification in SwaggerHub it opens with the correct editor?

Following the OpenApi Spec:

     openapi: 3.0.1
info:
  title: aut-reg-inf-autreg-58-openapi-lambdab-final
  version: "1.0"
servers:
  - url: 'https://serverUrl.com'
paths:
  /buildbranch:
    post:
      operationId: insertEntry
      responses:
        default:
          description: A textual response
          content:
            application/json:
              schema:
                type: object
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/MODELde9675'
            example:
              repository: authority-registry
              branch: master
              owner: BIBSYSDEV
              action: create
        required: true
  /githubhook:
    post:
      operationId: githubhook
      responses:
        default:
          description: A textual response
          content:
            text/plain:
              schema:
                type: string
components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: api-key
  schemas:
    MODELde9675:
      type: object
      properties:
        owner:
          type: string
          description: The owner
        action:
          type: string
          description: create or update
        repository:
          type: string
          description: The name of the repository
        branch:
          type: string
          description: The name of the branch
security:
  - ApiKeyAuth: []