diff --git a/CHANGELOG.md b/CHANGELOG.md
index 74029ac43..8b477328a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,27 @@
+<a name="1.9.0"></a>
+# [1.9.0](https://github.com/rime/librime/compare/1.8.5...1.9.0) (2023-09-16)
+
+
+### Bug Fixes
+
+* avoid invalid page_size ([#679](https://github.com/rime/librime/issues/679)) ([53ce306](https://github.com/rime/librime/commit/53ce306))
+
+
+### Features
+
+* add `append_comment` option to `reverse_lookup_filter` ([#699](https://github.com/rime/librime/issues/699)) ([f079c3c](https://github.com/rime/librime/commit/f079c3c))
+* **dict:** shorten the data struct used by Vocabulary ([210ab6c](https://github.com/rime/librime/commit/210ab6c))
+* **switches:** abbreviate state labels ([45cd64b](https://github.com/rime/librime/commit/45cd64b))
+
+
+### Performance Improvements
+
+* release memory of temporary fields ([#690](https://github.com/rime/librime/issues/690)) ([43ae3a9](https://github.com/rime/librime/commit/43ae3a9))
+* replace rbtree with vector of pair ([#684](https://github.com/rime/librime/issues/684)) ([c515afb](https://github.com/rime/librime/commit/c515afb))
+* **dict:** improve dict complile performance ([#663](https://github.com/rime/librime/issues/663)) ([bd3c7c7](https://github.com/rime/librime/commit/bd3c7c7))
+
+
+
 <a name="1.8.5"></a>
 ## [1.8.5](https://github.com/rime/librime/compare/1.8.4...1.8.5) (2023-02-05)
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 12311a8ed..3ec4398fd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@ cmake_minimum_required(VERSION 3.12)
 project(rime)
 set(CMAKE_CXX_STANDARD 14)
 
-set(rime_version 1.8.5)
+set(rime_version 1.9.0)
 set(rime_soversion 1)
 
 add_definitions(-DRIME_VERSION="${rime_version}")
diff --git a/package.json b/package.json
index f351d9aae..51a4f9127 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "librime",
-  "version": "1.8.5",
+  "version": "1.9.0",
   "description": "Rime Input Method Engine",
   "main": "index.js",
   "directories": {