---
title: "How to upgrade to exact-by-default object type syntax"
short-title: "Upgrade to exact-by-default"
authors: [jordan-brown]
medium-link: "https://medium.com/flow-type/how-to-upgrade-to-exact-by-default-object-type-syntax-7aa44b4d08ab"
---

:::info[Historical]
This post described upgrading to exact-by-default object type syntax at the time of writing. For current syntax and behavior, see the [Objects](/en/docs/types/objects) documentation.
:::

Object types will become exact-by-default. Read this post to learn how to get your code ready!

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