diff --git a/ChangeLog.txt b/ChangeLog.txt
index a6761c905..9be1899a3 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -1196,3 +1196,6 @@
 	* apps/nsh: Clean up network status presentation for IPv6 (2015-01-24).
 
 7.8 2015-xx-xx Gregory Nutt <gnutt@nuttx.org>
+
+	* apps/interpreters/micropython: Add math library defines for nan(),
+	  copysign(), and trunc() functions.  From Brennan Ashton (2015-01-26).