diff --git a/README.md b/README.md
index ab883f9f..2d3227a8 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ socket.connect()
 ```
 
 ## Features
-- Supports socket.io 2.0+/3.0+.
+- Supports socket.io 2.4.1.
 - Supports Binary
 - Supports Polling and WebSockets
 - Supports TLS/SSL