diff --git a/Cargo.toml b/Cargo.toml
index 0ff0735..fe9766f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tui-textarea"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 rust-version = "1.56.1" # for `tui` crate support
 authors = ["rhysd <lin90162@yahoo.co.jp>"]