TODO | 1 +

diff --git a/TODO b/TODO
index d2efcbb6a9fc9a3f08808f7a61fde51dc93cd35a..55720a2cb505df7c8c69cf88218761a1f49d4196 100644
--- a/TODO
+++ b/TODO
@@ -47,6 +47,7 @@   cf.  https://public-inbox.org/git/20160814012706.GA18784@starla/
 
 * portability to FreeBSD (and other Free Software *BSDs)
   ugh... https://rt.cpan.org/Ticket/Display.html?id=116615
+  (IO::KQueue is broken with Danga::Socket)
 
 * improve documentation