diff --git a/NOTICE b/NOTICE
index 3dc2fdc0..a0b422bb 100644
--- a/NOTICE
+++ b/NOTICE
@@ -23,6 +23,11 @@ Changes:
   sets ST to $80 (device not present) and returns, instead of waiting forever.
 - src/kernal/iec/close_iec.s (2026-10-15): a CLOSE that finds no device sets ST to $80
   (device not present), and still frees the file number.
+- src/kernal/iec/unlsn.s, untlk.s (2026-10-15): UNLSN and UNTLK end with CLK, DATA, and ATN
+  released; UNLSN left CLK pulled, and UNTLK waited for a talker to pull CLK, which after
+  UNTALK none does, and then left CLK pulled.
+- src/kernal/iec/iec_return.s (2026-10-15): a serial routine that finds no device releases
+  CLK, DATA, and ATN; it left CLK pulled.
 - NOTICE: this file.
 
 The licence terms are unchanged; see LICENSE, COPYING, and COPYING.LESSER.