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---
title: httpAgentOptions
description: Next.js will automatically use HTTP Keep-Alive by default. Learn more about how to disable HTTP Keep-Alive here.
---
{/* The content of this doc is shared between the app and pages router. You can use the `<PagesOnly>Content</PagesOnly>` component to add content that is specific to the Pages Router. Any shared content should not be wrapped in a component. */}
In Node.js versions prior to 18, Next.js automatically polyfills `fetch()` with [undici](/docs/architecture/supported-browsers#polyfills) and enables [HTTP Keep-Alive](https://developer.mozilla.org/docs/Web/HTTP/Headers/Keep-Alive) by default.
To disable HTTP Keep-Alive for all `fetch()` calls on the server-side, open `next.config.js` and add the `httpAgentOptions` config:
```js filename="next.config.js"
module.exports = {
httpAgentOptions: {
keepAlive: false,
},
}
```
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