diff --git a/CHANGELOG.md b/CHANGELOG.md
index a9c903b8..76e0fc3a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,10 +1,14 @@
-Arduino JSON: change log
-========================
+Arduino JSON library: change log
+================================
 
 v2.0
 ----
 
-* Added JSON encoding
+* Added JSON encoding.
+
+**Breaking change**: you need to add the following line at the top of your program.
+
+	using namespace ArduinoJson::Parser;
 
 v1.2
 ----