> For the complete documentation index, see [llms.txt](https://docs.valtimo.nl/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.valtimo.nl/valtimo-docs-v3/release-notes/13.x.x/13.9.1.md).

# 13.9.1

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**Release date 24-12-2025**
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## New Features

* **Enabling virus scanning**

When enabled, files uploaded to the Documenten API or in temporary file storage will be scanned for viruses. More details can be found in the [virus scanning documentation](/valtimo-docs-v3/features/case/zgw/zgw-documents.md#enabling-virus-scanning)

## Bugfixes

* Importing an existing case definition from an uploaded zip file will now overwrite the existing data.