diff --git a/README.md b/README.md
index a5c261cf..ffc3cad8 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,4 @@
+> WARNING: this library is still in active development under v0.1.0, use it at your own risk!
 
 <div align="center">
   <img src="ICON.png" width="200"/>