# Prisma 4.15.0 — Release & Upgrade Intelligence
- **Product:** Prisma (https://prisma.io)
- **Version:** 4.15.0
- **Released:** May 30, 2023
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/prisma/updates/4.15.0/

## Executive Summary (TL;DR)
Prisma 4.15.0. Source highlight: 🌟 **Help us spread the word about Prisma by starring the repo or tweeting about the release.** 🌟

## New Features
-  You already added the platform "debian-openssl-1.1.x" to the "generator" block in the "schema.prisma" file as described in https://pris.ly/d/client-generator, but something went wrong. 
- `Cannot find name '$PrismaModel'` due to feature `extendedWhereUnique` with preview feature `fieldReference`
- Typo in generating migration SQL to add enum.

## Improvements
- The downloaded Query Engine doesn’t match the runtime/ target platform your application is running on.
- The Query Engine is not copied to your final application bundle during the build step.

## Bug Fixes
- MongoDB: Quick fix for missing `@map("_id")` annotation

## Upgrade Command
```bash
npm install --save-dev --save-exact prisma@4.15.0
```