diff --git a/doc/private/branches b/doc/private/branches
index 8a55c1012b..782e701b03 100644
--- a/doc/private/branches
+++ b/doc/private/branches
@@ -43,6 +43,7 @@ rt15006				new
 rt15034				new	
 rt15036				open		// ixfr-from-differences serial
 rt15103				new	
+rt15216				new	
 rt1727				new		// ixfr-from-differences workfile
 rt1727b				new	
 rt1727c				new