diff --git a/python/README.md b/python/README.md
index d3d0b027d810..6d479bee2db4 100644
--- a/python/README.md
+++ b/python/README.md
@@ -10,3 +10,8 @@ harnesses.
 
 servo-specific python code e.g. implementations of mach commands. This
 is the canonical repository for this code.
+
+= tidy =
+
+servo-tidy is used to check licenses, line lengths, whitespace, flake8 on
+Python files, lock file versions, and more.