diff --git a/winsup/cygwin/release/1.7.21 b/winsup/cygwin/release/1.7.21
index b1a045eeb..3c8fe884e 100644
--- a/winsup/cygwin/release/1.7.21
+++ b/winsup/cygwin/release/1.7.21
@@ -14,3 +14,6 @@ Bug fixes:
 
 - Fix creation of relative native symlinks.
   Fixes: http://cygwin.com/ml/cygwin/2013-06/msg00340.html
+
+- Update profiling code to latest from Mingw-w64.  Allows profiling on x86_64
+  now and fixes http://cygwin.com/ml/cygwin/2013-06/msg00376.html