diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ee6c62..1c67609 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
-## [Unreleased]
+## [0.9.0]
 
 ### Breaking changes
 
@@ -96,7 +96,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 First release.
 
-[unreleased]: https://github.com/gd32-rust/gd32f1x0-hal/compare/0.8.0...HEAD
+[unreleased]: https://github.com/gd32-rust/gd32f1x0-hal/compare/0.9.0...HEAD
 [0.2.0]: https://github.com/gd32-rust/gd32f1x0-hal/compare/0.1.0...0.2.0
 [0.2.1]: https://github.com/gd32-rust/gd32f1x0-hal/compare/0.2.0...0.2.1
 [0.3.0]: https://github.com/gd32-rust/gd32f1x0-hal/compare/0.2.1...0.3.0
@@ -106,3 +106,4 @@ First release.
 [0.7.0]: https://github.com/gd32-rust/gd32f1x0-hal/compare/0.6.0...0.7.0
 [0.7.1]: https://github.com/gd32-rust/gd32f1x0-hal/compare/0.7.0...0.7.1
 [0.8.0]: https://github.com/gd32-rust/gd32f1x0-hal/compare/0.7.1...0.8.0
+[0.9.0]: https://github.com/gd32-rust/gd32f1x0-hal/compare/0.8.0...0.9.0
diff --git a/Cargo.toml b/Cargo.toml
index 101f72a..a47dc8d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,7 +8,7 @@ name = "gd32f1x0-hal"
 repository = "https://github.com/gd32-rust/gd32f1x0-hal"
 readme = "README.md"
 edition = "2018"
-version = "0.8.0"
+version = "0.9.0"
 
 [package.metadata.docs.rs]
 features = ["gd32f130x8", "rt"]
diff --git a/README.md b/README.md
index f6f81ee..d83028b 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ cortex-m = { version = "0.7.7", features = ["critical-section-single-core"] }
 cortex-m-rt = "0.7.3"
 # Panic behaviour, see https://crates.io/keywords/panic-impl for alternatives
 panic-halt = "0.2.0"
-gd32f1x0-hal = { version = "0.8.0", features = ["rt", "gd32f130x8"] }
+gd32f1x0-hal = { version = "0.9.0", features = ["rt", "gd32f130x8"] }
 ```
 
 If you build your project now, you should get a single error:
@@ -169,7 +169,7 @@ When using this crate as a dependency in your project, the microcontroller can
 be specified as part of the `Cargo.toml` definition.
 
 ```toml
-gd32f1x0-hal = { version = "0.8.0", features = ["gd32f130x8", "rt"] }
+gd32f1x0-hal = { version = "0.9.0", features = ["gd32f130x8", "rt"] }
 ```
 
 ## Documentation