diff --git a/README.md b/README.md
index 3516115..a9c029d 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,8 @@ Table of Contents
 * [TODO](#todo)
 
 
+> **NOTE:** Incompatible changes in v2.0 compared to v1.x!
+
 Introduction
 ------------