---
title: TestingBot Tunnel Changelog
description: View the complete version history and release notes for TestingBot Tunnel,
  including new features, improvements, and bug fixes.
source_url:
  html: https://testingbot.com/support/tunnel/changelog
  md: https://testingbot.com/support/tunnel/changelog/index.md
---
# Release history

Every released version of TestingBot Tunnel, newest first. New features, improvements and bug fixes.

1.   

## v4.7
March 2026Current

  - Improved Websocket proxying issue
  - Updated dependencies for improved security and performance

2.   

## v4.6
January 2026

  - Added `--shared` option to share a tunnel with team members
  - Updated dependencies for improved security and performance

3.   

## v4.4
October 2025

  - Improved `--proxy` and `--proxy-userpwd` reliability
  - Updated dependencies

4.   

## v4.3
August 2025

  - Enhanced `--doctor` diagnostic checks
  - Improved connection monitoring and automatic retry mechanisms
  - Updated Jetty and SSH libraries
  - Dropped support for Java 8 (Java 11+ now required)

5.   

## v4.0
December 2024

  - Added WebSocket and Server-Sent Events (SSE) support
  - Added `--nobump` option to disable SSL bumping
  - Upgraded to Jetty 11

6.   

## v3.5
May 2023

  - Upgraded secure connection ciphers for improved security
  - Updated dependencies

7.   

## v3.2
February 2021

  - Updated dependencies for security and compatibility

8.   

## v3.1
February 2020

  - Fixed tunnel polling to prevent indefinite connection attempts
  - Built with Java 8 for broader compatibility
  - Internal code improvements

9.   

## v3.0
September 2019

  - Updated Jetty dependencies
  - Various stability improvements

10.   

## v2.9
January 2019

  - Prevented duplicate port allocation
  - Improved timeout handling and diagnostic checks

11.   

## v2.8
June 2018

  - Fixed null pointer exception in connection handler

12.   

## v2.7
June 2018

  - Added upstream HTTPS proxy support via CONNECT method (`--proxy`)
  - Renamed `--jettyport` option to `--localport`
  - Enabled `--nocache` integration with Manual Testing API
  - Removed hardcoded port restrictions

13.   

## v2.6
April 2018

  - Added option to inject custom HTTP headers into requests
  - Added automatic basic authentication for configured hosts
  - Clarified `--nocache` behavior: disables all HTTP request caching
  - Removed deprecated `--boost` and `--ssl` options
  - Fixed incorrect Java version detection

14.   

## v2.5
September 2017

  - Enhanced `--doctor` to verify required ports are available
  - Added `--pac` option to configure a PAC (Proxy Auto-Config) URL for test sessions

15.   

## v2.4
August 2017

  - Added `--tunnel-identifier` to run multiple tunnels on the same account
  - Added local directory serving for static file testing
  - Added embedded REST API for tunnel statistics (default port 8003)
  - Improved logging with configurable output format, file logging, and debug levels
  - Improved connection error handling with automatic reconnection

16.   

## v2.3
October 2016

  - Added `--doctor` command to troubleshoot configuration issues
  - Debug mode now outputs HTTP headers for easier troubleshooting

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