diff --git a/hash/doc/changes.qbk b/hash/doc/changes.qbk
index 0288804..7a56d38 100644
--- a/hash/doc/changes.qbk
+++ b/hash/doc/changes.qbk
@@ -59,4 +59,10 @@
 * Using the boost typedefs for `long long` and `unsigned long long`.
 * Move the extensions into their own header.
 
+[h2 Boost 1.37.0]
+
+* [@http://svn.boost.org/trac/boost/ticket/2264 Ticket 2264]:
+  In Visual C++, always use C99 float functions for `long double` and `float` as
+  the C++ overloads aren't always availables.
+
 [endsect]