diff --git a/Cargo.toml b/Cargo.toml
index 58a9caf..a19f7b3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "vlc-rs"
-version = "0.3.0"
+version = "0.4.0"
 authors = ["T. Okubo <t.okubo.rx78+github@gmail.com>"]
 
 description = "Rust bindings for libVLC media framework."