# Cal.com v5.3.9 — Release & Upgrade Intelligence
- **Product:** Cal.com (https://cal.com)
- **Version:** v5.3.9
- **Released:** Jun 09, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/calcom/updates/v5.3.9/

## Executive Summary (TL;DR)
Cal.com v5.3.9. Source highlight: fix: generator enums in prisma db

## New Features
- feat: v2 return team event type hosts username
- feat: add support for custom no schedule children in AvailabilitySett…
- feat: OnformChange on Availability Settings Atom
- feat: update translations via @LingoDotDev
- revert: "perf: use app dir to fetch team feature flags in settings"
- feat: Enable Adding Custom children components at the bottom of EventMeta within Booker using children component props

## Improvements
- perf: upgrade to next 15.3.2
- perf: migrate listHandler to AttributeRepository + cache attributes fetching in RSCs

## Bug Fixes
- fix: generator enums in prisma db
- fix: recording button bug
- fix: v2 slots reservation
- fix: revalidations for attributes are missing in some places
- fix: Form preview erroring if not all team members are hosts
- fix: platformPlanGuard per active users plan