diff --git a/Cargo.toml b/Cargo.toml
index 6d3b51f..af1290a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "beaver"
-version = "0.1.0"
+version = "1.0.0"
 authors = ["Takayuki Maeda <takoyaki0316@gmail.com>"]
 edition = "2018"
 license = "MIT"
diff --git a/README.md b/README.md
index c178f9b..86effe6 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@
 
 ```toml
 [dependencies]
-beaver = "0.1.0"
+beaver = "1"
 serde = { version = "1.0", features = ["derive"] }
 ```
 
@@ -22,7 +22,7 @@ If you want to use [chrono](https://docs.rs/chrono/) for your struct fields, `Ca
 
 ```toml
 [dependencies]
-beaver = "0.1.0"
+beaver = "1"
 serde = { version = "1.0", features = ["derive"] }
 # you need `serde` feature.
 chrono = { version = "0.4", features = ["serde"] }
diff --git a/src/lib.rs b/src/lib.rs
index 7b43c1f..170e248 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -7,13 +7,13 @@
 //! ## Dependencies
 //! ```toml
 //! [dependencies]
-//! beaver = "0.1.0"
+//! beaver = "1"
 //! serde = { version = "1.0", features = ["derive"] }
 //! ```
 //! If you want to use [chrono](https://!docs.rs/chrono/) for your struct fields, `Cargo.toml` would look like this.
 //! ```toml
 //! [dependencies]
-//! beaver = "0.1.0"
+//! beaver = "1"
 //! serde = { version = "1.0", features = ["derive"] }
 //! # you need `serde` feature.
 //! chrono = { version = "0.4", features = ["serde"] }