diff --git a/README.md b/README.md
index 3f6f1ea002..ee81a8cff6 100644
--- a/README.md
+++ b/README.md
@@ -428,6 +428,7 @@ Ruff is used by a number of major open-source projects and companies, including:
 - [Pydantic](https://github.com/pydantic/pydantic)
 - [Pylint](https://github.com/PyCQA/pylint)
 - [Reflex](https://github.com/reflex-dev/reflex)
+- [River](https://github.com/online-ml/river)
 - [Rippling](https://rippling.com)
 - [Robyn](https://github.com/sansyrox/robyn)
 - [Saleor](https://github.com/saleor/saleor)