diff --git a/README.md b/README.md
index 26f317d..3a7d769 100644
--- a/README.md
+++ b/README.md
@@ -10,3 +10,8 @@ $ python3 nav.py mars
 Requires Python 3.9 or newer; no further dependencies.
 
 All routes start at Earth. Getting back is your own problem.
+
+## Contributing
+
+Use Conventional Commits. Do not push broken code.
+(Yes, Dr. Honk, this means you.)