diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 54f775c3..65c5f74b 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -21,7 +21,7 @@ You can run the formatter with:
 $ black pyanalyze
 ```
 
-## flake8
+## ruff
 
 We use [ruff](https://docs.astral.sh/ruff/) as a linter and import sorter: