diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 8de4e5d8c..b923eee1a 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -98,12 +98,15 @@ Two things to know before editing:
 
 **Code examples are not written into the pages.** They live in real tests under
 `docs/web-tests/{py,ts,rs}`, are extracted into `docs/web/snippets/`, and are
-imported by the pages. Edit the test, then regenerate:
+imported by the pages. Edit the test, then regenerate from the repository root:
 
 ```bash
-uv run docs/web-tests/mdx_snippets_gen.py -s docs/web-tests/py
+uv run docs/web-tests/mdx_snippets_gen.py -s docs/web-tests/py -s docs/web-tests/ts -s docs/web-tests/rs -o docs/web/snippets
 ```
 
+Review the diff before committing: a few modules currently regenerate with
+unrelated changes, so commit only the snippets for the examples you changed.
+
 An example that stops compiling fails the pull request that broke it.
 
 **Every heading carries an explicit `{#anchor}`.** Those anchors are how the