diff --git a/HISTORY.md b/HISTORY.md
index 94b2007f..4e73acf8 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -25,6 +25,11 @@ http://visjs.org
   `new DataSet(data, options)`.
 
 
+### Graph
+
+- added recalculate hierarchical layout to update node event.
+- added arrowScaleFactor to scale the arrows on the edges.
+
 ## 2014-04-18, version 0.7.4
 
 ### Graph