diff --git a/README.md b/README.md
index c21510e3f..7e33c69e7 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ Dragonfly is an open source intelligent P2P based image and file distribution sy
 
 Dragonfly is now hosted by the [Cloud Native Computing Foundation](https://cncf.io) (CNCF) as a Sandbox Level Project. Originally it was born to solve all kinds of distribution at very large scales, such as application distribution, cache distribution, log distribution, image distribution, and so on.
 
-Dragonfly was written in Java with the previous versions(< 0.3.0), and now is being refactored with Go.
+Dragonfly has finished refactoring in Golang. Now versions > 0.4.0 are totally in Golang, while those < 0.4.0 are in Java. We encourage adopters to try Golang version first, since Java versions will be out of support in the next few releases.
 
 ## Features