diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index f5c300d..b830ad2 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -3,3 +3,5 @@
 (Initial — see git history.)
 
 # update 13 (2026-04)
+
+# update 27 (2026-04)