How do I set biblatexoptions in an RMarkdown document?

Publishing Your Results
,
1

I would like to produce a bibliography in an HTML document using biblatex but suppress the publication of reference entries doi and urls. I thought this would work based on some of my reading.

---
title: "Test"
output:
  html_document:
    citation_package: biblatex
date: "2025-05-29"
bibliography: packages.bib
biblatexoptions: [url=false]
---

```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```

```{r}

# the second argument can be a .bib file
knitr::write_bib(c("knitr", "stringr"), "packages.bib", width = 60)
```

How do I cite this without the URL?

[@R-knitr]

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