diff --git a/ChangeLog b/ChangeLog
index e3a5ef0cbbe..0e62d5c79fc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,6 +3,13 @@ English Dolibarr ChangeLog
 --------------------------------------------------------------
 
 
+WARNING:
+
+Following changes may create regressions for some external modules, but were necessary to make Dolibarr better:
+* PHP 5.5 is no more supported. Minimum PHP is now 5.6+.
+
+  
+  
 ***** ChangeLog for 11.0.0 compared to 10.0.0 *****
 For Users: