diff --git a/CHANGES b/CHANGES
index 8b5a662447..8b9af7181e 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,9 @@
+ 171.   [cleanup]       On NetBSD systems, the mit-pthreads or unproven-pthreads
+			library is now always used unless --with-ptl2 is
+			explicitly specified on the configure command line.
+			The --with-mit-pthreads option is no longer needed
+			and has been removed.
+
  170.	[cleanup]	Remove inter server consistancy checks from zone,
 			these should return as a seperate module in 9.1.
 			dns_zone_checkservers(), dns_zone_checkparents(),