木偶师不换我的IP

基本上,任何代理服务器(例如从这个网站 https://www.socks-proxy.net/ )不会改变我的IP

const puppeteer = require('puppeteer');

(async () => {
  const browser = await puppeteer.launch({
    args: ['--proxy-server=http=188.134.1.20:63756'],
    ignoreHTTPSErrors: true,
    headless: true
  })
  const page = await browser.newPage()
  await page.goto('https://www.purevpn.com/what-is-my-ip', { waitUntil: 'networkidle0' })
  // I can see my native IP on a screenshot
  await page.screenshot({ path: 'example.png' })

  await browser.close()
})()

我错过了什么?