diff --git a/README.md b/README.md
index 9073c22a..526ece1f 100644
--- a/README.md
+++ b/README.md
@@ -328,6 +328,7 @@ free-claude-code/
 ```bash
 uv run pytest          # Run tests
 uv run ty check        # Type checking
+uv run ruff check      # Code style checking
 uv run ruff format     # Code formatting
 ```