# Deno v0.4.0 — Release & Upgrade Intelligence
- **Product:** Deno (https://deno.com)
- **Version:** v0.4.0
- **Released:** May 03, 2019
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/deno/updates/v0.4.0/

## Executive Summary (TL;DR)
Deno v0.4.0. Source highlight: Note: We are moving to a new versioning scheme in which we increment the minor number every week instead of the patch.

## New Features
- add "deno run" subcommand (#2215)
- add "deno xeval" subcommand (#2260)
- add --no-fetch CLI flag to prevent remote downloads (#2213)
- Add Request global constructor (#2253)
- fs: add Deno.utime/Deno.utimeSync (#2241)
- Add support for custom tsconfig.json (#2089)

## Bug Fixes
- Fix: deno --v8-options does not print v8 options (#2277)
- Performance improvements and fix memory leaks (#2259, #2238)
- textproto: fix invalid header error and move tests (#369)
- fix ensureLink (#360)