diff --git a/README.md b/README.md
index bddccd0..9b704e6 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,9 @@
 
 [Documentation](http://alexcrichton.com/toml-rs/toml/index.html)
 
-A TOML decoder and encoder for Rust.
+A TOML decoder and encoder for Rust. This library is currently compliant with
+the v0.4.0 version of TOML. This library will also likely continue to stay up to
+date with the TOML specification as changes happen.
 
 ```toml
 # Cargo.toml