diff --git a/dist/changes-5.3.0 b/dist/changes-5.3.0
index 35fc9cabb0b..f37e38de279 100644
--- a/dist/changes-5.3.0
+++ b/dist/changes-5.3.0
@@ -15,6 +15,14 @@ corresponding to tasks in the Qt Bug Tracker:
 Each of these identifiers can be entered in the bug tracker to obtain more
 information about a particular change.
 
+****************************************************************************
+*                   Platform deprecation notice                            *
+****************************************************************************
+
+ - The support for deployment on OS X 10.6 (Snow Leopard) is deprecated
+   in Qt 5.3, and will be removed in Qt 5.4. The platform is currently
+   not tested, and most likely has issues that are not fully documented.
+
 ****************************************************************************
 *                          Library                                         *
 ****************************************************************************