Как указать во Flask нужный mime тип?

#!/usr/bin/env python3

from flask import Flask, render_template, Response
app = Flask(__name__)

@app.route('/')
def ipxe():
    body = render_template("fedora.37.ipxe")
    return Response(body, mimetype='text/plain')

@app.route('/ks')
def kickstart():
    body = render_template("anaconda-ks.cfg")
    return Response(body, mimetype='text/plain')

@app.route('/settings')
def settings_json():
    body = render_template("settings.json")
    return Response(body, mimetype='application/json')


app.run(debug=True, host='0.0.0.0')