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# Mule Upgrade Tool 1.1.0 Release Notes

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

The Mule upgrade tool is a command line utility for updating and upgrading standalone instances of
the Mule 4 runtime engine that are hosted on-premises. The tool can upgrade any supported Mule 4
version (minor, patch, or patch update versions) to a new version.

MuleSoft recommends upgrading to the latest version of Mule.

To incorporate the latest changes and bug fixes, MuleSoft also recommends using the latest version
of the tool.

## September 8, 2022

## What’s New

You can now upgrade Mule instances running version 4.1.1 or later. When updating your current Mule
instance to a version between 4.1.1 and 4.1.4, use any patch update released after January 20, 2022.

## Compatibility

<table><colgroup><col> <col></colgroup><thead><tr><th>Application/Service</th><th>Version</th></tr></thead><tbody><tr><td><p>Mule</p></td><td><p>4.1.1 and later</p></td></tr></tbody></table>

## Fixed Issues

<table><colgroup><col> <col></colgroup><thead><tr><th>Issue</th><th>ID</th></tr></thead><tbody><tr><td><div><div><p>Help messages now display with no typing errors.</p></div></div></td><td><div><div><p>W-10854283</p></div></div></td></tr><tr><td><div><div><p>The list of known files is now updated.</p></div></div></td><td><div><div><p>W-11397729</p></div></div></td></tr><tr><td><div><div><p>A rollback now identifies and deletes files introduced in an upgraded Mule Runtime distribution.</p></div></div></td><td><div><div><p>W-10887753</p></div></div></td></tr><tr><td><div><div><p>The <code>wrapper.ping.timeout</code> property is now correctly updated in all Mule Runtime versions.</p></div></div></td><td><div><div><p>W-11091238</p></div></div></td></tr><tr><td><div><div><p>The Runtime Manager agent version is now correctly identified in Windows environments.</p></div></div></td><td><div><div><p>W-11386511</p></div></div></td></tr><tr><td><div><div><p>The upgrade process now deletes old directories.</p></div></div></td><td><div><div><p>W-11393439</p></div></div></td></tr><tr><td><div><div><p>The upgrade process now removes files added through a cumulative patch installation.</p></div></div></td><td><div><div><p>W-11526573</p></div></div></td></tr></tbody></table>

## See Also

- [Mule Upgrade Tool](https://docs.mulesoft.com/mule-runtime/latest/mule-upgrade-tool)

- [Known Issues](https://help.salesforce.com/s/issues)