diff --git a/WHATS_NEW.md b/WHATS_NEW.md
index 6748cabe..714cd5f0 100644
--- a/WHATS_NEW.md
+++ b/WHATS_NEW.md
@@ -5,6 +5,8 @@ WHATS NEW
 
 <b>2014-09-?</b> new release **v1.4.0**
 
+v1.4 breaks your code! Look at [changelog](https://github.com/jsprit/jsprit/blob/master/CHANGELOG.md) to migrate from v1.3.1 to v1.4.
+
 <b> SKILLS </b>
 
 Skills can now be included easily (see for example https://github.com/jsprit/jsprit/blob/master/jsprit-examples/src/main/java/jsprit/examples/SolomonWithSkillsExample.java).