# Cal.com v5.3.2 — Release & Upgrade Intelligence
- **Product:** Cal.com (https://cal.com)
- **Version:** v5.3.2
- **Released:** May 19, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/calcom/updates/v5.3.2/

## Executive Summary (TL;DR)
Cal.com v5.3.2. Source highlight: perf: Better perf by going event type first w/o booking

## New Features
- perf: add p-limit to _getUsersAvailability to limit concurrent executions to 10
- feat: option to enforce language for bookingPage
- chore: Add workflow to post security advisories to Slack
- feat: support no show webhook for instant meetings
- chore: add missing migration for RoutingFormResponseDenormalized
- revert: "perf: add p-limit to _getUsersAvailability to limit concurre…

## Improvements
- perf: Better perf by going event type first w/o booking
- perf: Optimize getSlots function to handle large dateRanges arrays efficiently
- perf: optimize getSlots performance by selectively merging overlapping date ranges

## Bug Fixes
- fix: make 'Send reset email' button text visible on hover (#21334)
- fix: Wrong event details sent to previous host on reschedule RR event