diff --git a/core-principles/versioning.md b/core-principles/versioning.md
index bc2bf01..40fd4cd 100644
--- a/core-principles/versioning.md
+++ b/core-principles/versioning.md
@@ -48,4 +48,4 @@ application/vnd.example.resource+json; version=3
 
 
 ## API Description Versioning
-TODO
+TODO.