# Mendix runtime version age

<table><thead><tr><th width="138">Check ID</th><th>COMP_0002</th></tr></thead><tbody><tr><td>Category</td><td>Maintainability</td></tr><tr><td>Summary</td><td>The version of Mendix that you use has an important effect on your app. Each version of Mendix has a different set of features, fixed bugs, and patched security vulnerabilities. Older versions of Mendix are harder to maintain because they are less compatible with new versions of widgets, modules, and Java libraries. It is recommended to keep your version of Mendix up-to-date, and no older than a year old.</td></tr><tr><td>Options</td><td>The oldest age (in days) of the Mendix version used by your app. The default value is 365 days.</td></tr><tr><td>Pass</td><td>The release date of the Mendix version used by your app is less than the value configured in this check.</td></tr><tr><td>Fail</td><td>The release date of the Mendix version used by your app is greater than the value configured in this check.</td></tr></tbody></table>