diff --git a/README.md b/README.md
index 4889d7a..44f7c9a 100644
--- a/README.md
+++ b/README.md
@@ -7,3 +7,5 @@ Nasal is a script language that used in FlightGear.
 There is a Nasal console in FlightGear but sometimes it is not so easy for every developer to use.
 
 So this is an interpreter for Nasal written by C++.
+
+The interpreter is still in development.Anyone who interested in this could also join us!