[Plugin: WordPress Importer] Upgrade notice showing despite using 0.5

Heya

The importer seems to be working fine, but the big red notice of:

A new version of this importer is available. Please update to version 0.5 to ensure compatibility with newer export files.

still appears for me on all Import pages, despite being positive I’m using 0.5.

https://www.ads-software.com/extend/plugins/wordpress-importer/