diff --git a/CHANGES b/CHANGES
index 8468931c5c..376ca421fe 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,5 +1,7 @@
 	--- 9.9.0 released ---
 
+3269.	[port]		darwin 11 and later now built threaded by default.
+
 3268.	[bug]		Convert RRSIG expiry times to 64 timestamps to work
 			out the earliest expiry time. [RT #23311]
 
diff --git a/config.threads.in b/config.threads.in
index 3dd9ea761c..3094ab087c 100644
--- a/config.threads.in
+++ b/config.threads.in
@@ -60,7 +60,9 @@ case $host in
 	# Linux kernels produce unusable core dumps from multithreaded
 	# programs, and because of limitations in setuid().
 	use_threads=false ;;	
-*-darwin10.*)
+*-darwin[[123456789]].*)
+	use_threads=false ;;
+*-darwin*.*)
 	use_threads=true ;;
 *)
 	use_threads=false ;;