# Cal.com v6.1.3 — Release & Upgrade Intelligence
- **Product:** Cal.com (https://cal.com)
- **Version:** v6.1.3
- **Released:** Jan 22, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/calcom/updates/v6.1.3/

## Executive Summary (TL;DR)
Cal.com v6.1.3. Source highlight: perf: `getUserAvailability` if `dateRange` is empty, early return

## New Features
- feat: remove Revert.dev dependency from Pipedrive integration
- feat: add option to hide duration selector in booking page for multiple durations by @devin-ai-integration[bot] in https://github.com/calcom/cal.com/pull/27033
- refactor: Handle unavailable features on iOS and consolidate Settings UI
- refactor: store timestamp instead of boolean for feature opt-in
- feat: add OAuth client developer settings page with approval workflow
- feat: add Cloudflare URL Scanner for malicious URL detection

## Improvements
- perf: `getUserAvailability` if `dateRange` is empty, early return

## Bug Fixes
- fix: handle invalid timezones gracefully in calendar events
- fix: filter out Google system calendars from calendar list
- fix: use orgAwareUsername in troubleshooter getSchedule request
- fix: handle incomplete href attributes in workflow email links
- fix: prevent HTML encoding in names
- fix: make linting required for CI