# Cal.com v4.5.3 — Release & Upgrade Intelligence
- **Product:** Cal.com (https://cal.com)
- **Version:** v4.5.3
- **Released:** Sep 20, 2024
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/calcom/updates/v4.5.3/

## Executive Summary (TL;DR)
Cal.com v4.5.3. Source highlight: chore: add granular logging to the logger

## New Features
- chore: add granular logging to the logger
- feat: onBeforeUpdate AvailabilitySettings prop
- feat: Add EXPAND accepting "team" in API V1 Bookings
- chore: revert availability autosave feature

## Improvements
- chore: improve api-v2 rate limiting

## Bug Fixes
- fix: bookings limits error