diff --git a/UPDATE.md b/UPDATE.md
index d54352627c..54a04059da 100644
--- a/UPDATE.md
+++ b/UPDATE.md
@@ -10,8 +10,8 @@ beta4 to beta5
 --------------
 
 * Expanded the SerializerInterface, while reducing the number of public
-  methods in the Serializer class itself and adding component specific
-  Exception classes.
+  methods in the Serializer class itself breaking BC and adding component
+  specific Exception classes.
 
 * The temporary storage for file uploads has been removed