# Prisma 6.16.2 — Release & Upgrade Intelligence
- **Product:** Prisma (https://prisma.io)
- **Version:** 6.16.2
- **Released:** Sep 16, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/prisma/updates/6.16.2/

## Executive Summary (TL;DR)
Prisma 6.16.2. Source highlight: Today, we are issuing a 6.16.2 patch release.

## Bug Fixes
- In Prisma ORM 6.16.0, we've enabled usage of the new `engineType = client` with Prisma Postgres, but our validation rules permitted invalid combinations of Prisma Postgres URLs and driver adapters. This now produces a clear error message indicating Prisma Postgres URLs and driver adapters are mutually exclusive.
- In the previous minor release, we've included a change that calls `unref()` on NodeJS timers to prevent them from keeping the NodeJS event loop active. This change unintentionally affected non-NodeJS runtimes like `workerd`, where it has resulted in runtime errors. This behavior has been made conditional to prevent these runtime errors.

## Upgrade Command
```bash
npm install --save-dev --save-exact prisma@6.16.2
```