diff --git a/CMakeLists.txt b/CMakeLists.txt
index ed5f7cdd..0fd9d1a7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.24.0)
 project(libchewing LANGUAGES C)
 
-set(CMAKE_PROJECT_VERSION 0.9.0-rc.3)
+set(CMAKE_PROJECT_VERSION 0.9.0)
 
 find_package(Git)
 if(Git_FOUND)
diff --git a/Cargo.lock b/Cargo.lock
index d3fb73a0..c269f1c4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -77,9 +77,9 @@ checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
 
 [[package]]
 name = "cc"
-version = "1.1.6"
+version = "1.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2aba8f4e9906c7ce3c73463f62a7f0c65183ada1a2d47e397cc8810827f9694f"
+checksum = "504bdec147f2cc13c8b57ed9401fd8a147cc66b67ad5cb241394244f2c947549"
 
 [[package]]
 name = "cfg-if"
@@ -89,7 +89,7 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "chewing"
-version = "0.9.0-rc.3"
+version = "0.9.0"
 dependencies = [
  "der",
  "directories",
@@ -100,7 +100,7 @@ dependencies = [
 
 [[package]]
 name = "chewing-cli"
-version = "0.9.0-rc.3"
+version = "0.9.0"
 dependencies = [
  "anyhow",
  "chewing",
@@ -110,7 +110,7 @@ dependencies = [
 
 [[package]]
 name = "chewing_capi"
-version = "0.9.0-rc.3"
+version = "0.9.0"
 dependencies = [
  "chewing",
  "env_logger",
@@ -127,9 +127,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.5.11"
+version = "4.5.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "35723e6a11662c2afb578bcf0b88bf6ea8e21282a953428f240574fcc3a2b5b3"
+checksum = "11d8838454fda655dafd3accb2b6e2bea645b9e4078abe84a22ceb947235c5cc"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -137,9 +137,9 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.5.11"
+version = "4.5.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49eb96cbfa7cfa35017b7cd548c75b14c3118c98b423041d70562665e07fb0fa"
+checksum = "216aec2b177652e3846684cbfe25c9964d18ec45234f0f5da5157b207ed1aab6"
 dependencies = [
  "anstream",
  "anstyle",
@@ -149,9 +149,9 @@ dependencies = [
 
 [[package]]
 name = "clap_derive"
-version = "4.5.11"
+version = "4.5.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d029b67f89d30bbb547c89fd5161293c0aec155fc691d7924b64550662db93e"
+checksum = "501d359d5f3dcaf6ecdeee48833ae73ec6e42723a1e52419c79abf9507eec0a0"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -453,14 +453,15 @@ dependencies = [
 
 [[package]]
 name = "tempfile"
-version = "3.10.1"
+version = "3.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "85b77fafb263dd9d05cbeac119526425676db3784113aa9295c88498cbf8bff1"
+checksum = "04cbcdd0c794ebb0d4cf35e88edd2f7d2c4c3e9a5a6dab322839b321c6a87a64"
 dependencies = [
  "cfg-if",
  "fastrand",
+ "once_cell",
  "rustix",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -531,6 +532,15 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.59.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
+dependencies = [
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.48.5"
diff --git a/Cargo.toml b/Cargo.toml
index fd945aa0..bb4f7e73 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ name = "chewing"
 description = "The Chewing (酷音) intelligent Zhuyin input method."
 documentation = "https://docs.rs/chewing"
 license = "LGPL-2.1-or-later"
-version = "0.9.0-rc.3"
+version = "0.9.0"
 rust-version = "1.77.0"
 edition = "2021"
 
diff --git a/NEWS b/NEWS
index ff0997eb..506307c8 100644
--- a/NEWS
+++ b/NEWS
@@ -1,38 +1,4 @@
-What's New in libchewing 0.9.0-rc.3 (July 28, 2024)
----------------------------------------------------------
-
-* Bug fixes
-  - Add back 0.5.x compat C headers. (introduced in v0.9.0-rc.1)
-  - Panic when connecting symbol to symbol or symbol to phrase. (introduced in
-    v0.9.0-rc.1)
-  - Panic when selecting phrases backwards at the end of buffer. (introduced in
-    v0.8.0)
-  - Panic when autocommit in select mode triggered by the simple engine.
-    (introduced in v0.9.0-rc.2)
-
-* Testing
-  - Support new editor options in the fuzzer.
-  - Generate test cases from fuzzer input.
-
-* Misc
-  - Append `git describe` to version string for unreleased version.
-
-
-What's New in libchewing 0.9.0-rc.2 (July 22, 2024)
----------------------------------------------------------
-
-* Features
-  - Revert mode switch notifications change.
-  - Make simple engine compatiable with Plain Zhuyin in ibus-chewing.
-  - Automatic snapshot selections when the curser is moved.
-* Developer Features
-  - Define version macros
-    - CHEWING_VERSION_MAJOR
-    - CHEWING_VERSION_MINOR
-    - CHEWING_VERSION_PATCH
-
-
-What's New in libchewing 0.9.0-rc.1 (July 16, 2024)
+What's New in libchewing 0.9.0 (August 11, 2024)
 ---------------------------------------------------------
 
 * Features
@@ -45,14 +11,14 @@ What's New in libchewing 0.9.0-rc.1 (July 16, 2024)
   - A new option to disable fullwidth toggle key.
   - Workman layout support.
   - Load embedded mini dictionary if system dictionaries were not found.
-  - Show notification about mode switches triggered by input.
   - Automatically load extra dictionaries found in search path
     - ${CHEWING_PATH}/dictionary.d/*.dat
+  - Automatic snapshot selections when the curser is moved.
 
 * Developer Features
-  - BREAKING: Remove language_mode and character_form methods
+  - BREAKING: Remove language_mode and character_form methods (Rust).
   - BREAKING: Remove unused pinyin.tab file
-  - BREAKING: Remove most unused C code
+  - BREAKING: Remove most unused C code but keep compat C headers.
   - Bump minimum supported Rust version to 1.77
   - Enable ELF symbol versioning. All existing symbols are marked as version
     CHEWING_0.5 and new symbols from this release are marked as CHEWING_0.9.
@@ -70,9 +36,15 @@ What's New in libchewing 0.9.0-rc.1 (July 16, 2024)
     - chewing_version_extra
   - New API to acknowledge output buffers:
     - chewing_ack
+  - Define version macros
+    - CHEWING_VERSION_MAJOR
+    - CHEWING_VERSION_MINOR
+    - CHEWING_VERSION_PATCH
 
 * Bug Fixes
   - Separate special handling by pinyin variants (#298)
+  - Panic when selecting phrases backwards at the end of buffer. (introduced in
+    v0.8.0)
 
 * Dictionary
   - Default dictionary updates and fixes (#331)
@@ -89,6 +61,8 @@ What's New in libchewing 0.9.0-rc.1 (July 16, 2024)
   - Test chewing_config_set_str with chewing.keyboard_type
   - Allow switching keyboard layout in genkeystroke
   - Add test for simple engine symbol input
+  - Support new editor options in the fuzzer.
+  - Generate test cases from fuzzer input.
 
 * Miscellaneous Tasks
   - Drop outdated ChangeLog
@@ -102,6 +76,7 @@ What's New in libchewing 0.9.0-rc.1 (July 16, 2024)
   - Bump Corrosion to v0.5
   - Fix building without using CMake presets
   - Force linking chewing_version obj file
+  - Append `git describe` to version string for unreleased version.
 
 
 What's New in libchewing 0.8.5 (July 8, 2024)
diff --git a/capi/Cargo.toml b/capi/Cargo.toml
index 2c1ba3fb..26141db8 100644
--- a/capi/Cargo.toml
+++ b/capi/Cargo.toml
@@ -2,7 +2,7 @@
 name = "chewing_capi"
 description = "The Chewing (酷音) intelligent Zhuyin input method."
 license = "LGPL-2.1-or-later"
-version = "0.9.0-rc.3"
+version = "0.9.0"
 rust-version = "1.77"
 edition = "2021"
 
@@ -10,7 +10,7 @@ edition = "2021"
 crate-type = ["rlib", "staticlib"]
 
 [dependencies]
-chewing = { version = "0.9.0-rc.3", path = ".." }
+chewing = { version = "0.9.0", path = ".." }
 env_logger = { version = ">= 0.10.2", default-features = false }
 log = { workspace = true }
 
diff --git a/capi/data/mini.dat b/capi/data/mini.dat
index 704827c6..435c3509 100644
Binary files a/capi/data/mini.dat and b/capi/data/mini.dat differ
diff --git a/capi/src/version.rs b/capi/src/version.rs
index 67c89a0a..53164167 100644
--- a/capi/src/version.rs
+++ b/capi/src/version.rs
@@ -6,7 +6,7 @@ pub const CHEWING_VERSION_PATCH: c_int = 0;
 
 #[no_mangle]
 pub extern "C" fn chewing_version() -> *const c_char {
-    c"0.9.0-rc.3".as_ptr()
+    c"0.9.0".as_ptr()
 }
 
 #[no_mangle]
@@ -26,5 +26,5 @@ pub extern "C" fn chewing_version_patch() -> c_int {
 
 #[no_mangle]
 pub extern "C" fn chewing_version_extra() -> *const c_char {
-    c"-rc.3".as_ptr()
+    c"".as_ptr()
 }
diff --git a/doc/chewing-cli.1 b/doc/chewing-cli.1
index af26016e..7be32401 100644
--- a/doc/chewing-cli.1
+++ b/doc/chewing-cli.1
@@ -1,6 +1,6 @@
 .ie \n(.g .ds Aq \(aq
 .el .ds Aq '
-.TH chewing-cli 1  "chewing-cli 0.9.0-rc.3" 
+.TH chewing-cli 1  "chewing-cli 0.9.0" 
 .SH NAME
 chewing\-cli \- Tools of the Chewing (酷音) intelligent Zhuyin input method.
 .SH SYNOPSIS
@@ -25,4 +25,4 @@ Display information about the dictionary
 chewing\-cli\-dump(1)
 Dump the dictionary entries into tsi.src formatted stream
 .SH VERSION
-v0.9.0-rc.3
\ No newline at end of file
+v0.9.0
\ No newline at end of file
diff --git a/fuzzer/Cargo.toml b/fuzzer/Cargo.toml
index ac4a364a..32db2644 100644
--- a/fuzzer/Cargo.toml
+++ b/fuzzer/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-chewing = { version = "0.9.0-rc.3", path = ".." }
-chewing_capi = { version = "0.9.0-rc.3", path = "../capi" }
+chewing = { version = "0.9.0", path = ".." }
+chewing_capi = { version = "0.9.0", path = "../capi" }
 log = "0.4.21"
 env_logger = { version = ">= 0.10.2", default-features = false }
diff --git a/tests/testhelper/Cargo.toml b/tests/testhelper/Cargo.toml
index 18c07fcb..710ef1ba 100644
--- a/tests/testhelper/Cargo.toml
+++ b/tests/testhelper/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 crate-type = ["cdylib"]
 
 [dependencies]
-chewing = { version = "0.9.0-rc.3", path = "../.." }
+chewing = { version = "0.9.0", path = "../.." }
 
 [features]
 sqlite = ["chewing/sqlite"]
diff --git a/tools/Cargo.toml b/tools/Cargo.toml
index 4517b695..98274d71 100644
--- a/tools/Cargo.toml
+++ b/tools/Cargo.toml
@@ -2,12 +2,12 @@
 name = "chewing-cli"
 description = "Tools of the Chewing (酷音) intelligent Zhuyin input method."
 license = "LGPL-2.1-or-later"
-version = "0.9.0-rc.3"
+version = "0.9.0"
 edition = "2021"
 
 [dependencies]
 anyhow = "1.0.0"
-chewing = { version = "0.9.0-rc.3", path = "..", features = ["sqlite"] }
+chewing = { version = "0.9.0", path = "..", features = ["sqlite"] }
 clap = { version = "4.4.18", features = ["derive"] }
 clap_mangen = { version = "0.2.12", optional = true }