# Turborepo v1.0.21 — Release & Upgrade Intelligence
- **Product:** Turborepo (https://turbo.build)
- **Version:** v1.0.21
- **Released:** Dec 23, 2021
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/turborepo/updates/v1.0.21/

## Executive Summary (TL;DR)
Turborepo v1.0.21. Source highlight: Fix postinstall script to work with NPM. Sorry about that! postinstall scripts are very hard to test. Going to deprecate 1.0.20 on npm since it is botched.

## Bug Fixes
- Fix postinstall script to work with NPM. Sorry about that! postinstall scripts are very hard to test. Going to deprecate 1.0.20 on npm since it is botched.

## Upgrade Command
```bash
npm install --save-dev --save-exact turbo@1.0.21
```