---
title: "Coder 2.12 - Coder Changelog"
description: "**Major Networking Performance Boost** – Since 2.9, Coder has significantly improved networking, culminating in **faster file transfers, more stable connections, and smoother experiences with resource-heavy applications** in 2.12."
image: "/_next/static/media/OpenGraph.f7fb2003.jpg"
---

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[Back to changelog](https://coder.com/changelog)

v2.12June 4, 2024

# Coder 2.12

**Major Networking Performance Boost** – Since 2.9, Coder has significantly improved networking, culminating in **faster file transfers, more stable connections, and smoother experiences with resource-heavy applications** in 2.12.

**Important Note:**
 - **The 2.12 CLI is not backward compatible** with earlier versions of Coder Server.
 - **Upgrade your server before upgrading the CLI** to avoid compatibility issues.
 - Read more in our blog: [How We Improved Performance of Userspace TCP Stack in Go by 5x](https://coder.com/blog/delivering-5x-faster-throughput-in-coder-2-12-0).

## New Features

- **Security & Authentication Enhancements** –

  - **Coder login tokens are now masked** for improved security.
  - **Provisioner tags can now be selected per workspace**, offering greater flexibility.
  - **Server now supports editing and deleting organizations via API**.
- **Performance & Networking Improvements** –

  - **Latest gVisor and Go 1.22.3 integrated** for optimized performance.
  - **PubSub latencies are now measured and exposed as metrics** for better observability.
  - **DERP send queue length increased to 512** for **higher network throughput**.
- **UI & Usability Updates** –

  - **VS Code now opens the most recent directory or workspace** when launched.
  - **Dashboards now display the number of times a coder\_app is opened** for better insights.
  - **New "Update and Start" button** appears when workspace updates are required by a template.

## Breaking Changes

- **CLI Compatibility Issue** – The **v2.12.0 CLI is not compatible with older Coder Server versions**. **Upgrade your server before upgrading the CLI**.

[View the full changelog](https://github.com/coder/coder/releases/tag/v2.12.0) on GitHub.

This release **delivers a major networking boost, enhances security, and refines the user experience**. If you have questions or feedback, join the conversation on **[Discord](https://discord.gg/coder)** or email us directly!