How do i set X-Content-Type-Options header in my request to get my pages?

Serverless Framework
1

I’m trying t set the X-Content-Type-Options header to nosniff, but nothing i did below is working when I’m developing locally. Do the headers not work locally or something? I’ve found no documentation on the x content type options header in any recent documentation/questions.

custom:
...
  apiGatewayServiceProxies:
    - s3:
        path: /
        method: get
        action: GetObject
        bucket:
          Ref: S3Bucket
        key: index.html
        cors: true
        acceptParameters:
          'method.request.header.Accept': true
          'method.request.header.Content-Type': true
          'method.request.header.X-Content-Type-Options': true
          'method.response.header.X-Content-Type-Options': true
        requestParameters:
          'integration.request.header.Accept': 'method.request.header.Accept'
          'integration.request.header.Content-Type': 'method.request.header.Content-Type'
          'integration.request.path.path': 'method.request.path.path'
          'integration.request.path.object': 'context.requestId'
          'integration.request.header.X-Content-Type-Options': 'nosniff'
        response:
          'integration.response.header.X-Content-Type-Options': 'nosniff'
    - s3:
        path: /{path+}
        method: get
        action: GetObject
        bucket:
          Ref: S3Bucket
        pathOverride: 'index.html'
        cors: true
        acceptParameters:
          'method.request.header.Accept': true
          'method.request.header.Content-Type': true
          'method.request.header.X-Content-Type-Options': true
          'method.response.header.X-Content-Type-Options': true
        requestParameters:
          'integration.request.header.Accept': 'method.request.header.Accept'
          'integration.request.header.Content-Type': 'method.request.header.Content-Type'
          'integration.request.path.path': 'method.request.path.path'
          'integration.request.path.object': 'context.requestId'
          'integration.request.header.X-Content-Type-Options': 'nosniff'
        response:
          'integration.response.header.X-Content-Type-Options': 'nosniff'