diff --git a/CHANGELOG.md b/CHANGELOG.md
index d62925b4d..142de9a5b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## v2.1.9
+
+* Add lite mode (Set journal mode and synchronous flag to OFF)
+* Fix memory leak and other known bug
+
 ## v2.1.8
 
 * Increase migration speed
diff --git a/README.md b/README.md
index 765f4f79f..18c56c809 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # WCDB
 
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](https://github.com/Tencent/wcdb/pulls)
-[![Release Version](https://img.shields.io/badge/Release-2.1.8-brightgreen.svg)](https://github.com/Tencent/wcdb/releases)
+[![Release Version](https://img.shields.io/badge/Release-2.1.9-brightgreen.svg)](https://github.com/Tencent/wcdb/releases)
 [![Language](https://img.shields.io/badge/Language-%20C++%20%7C%20Java%20%7C%20Kotlin%20%7C%20Swift%20%7C%20Objc-brightgreen.svg)](https://github.com/Tencent/wcdb/wiki)[![Platform](https://img.shields.io/badge/Platform-%20iOS%20%7C%20macOS%20%7C%20Android%20%7C%20Windows%20%7C%20Linux%20%7C%20OpenHarmony-brightgreen.svg)](https://github.com/Tencent/wcdb/wiki)
 
 中文版本请参看[这里][wcdb-wiki]
diff --git a/VERSION b/VERSION
index b370e25da..b88e5006f 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.1.8
\ No newline at end of file
+2.1.9
\ No newline at end of file
diff --git a/WCDB.cpp.podspec b/WCDB.cpp.podspec
index 5afcb5231..66a37d7b8 100644
--- a/WCDB.cpp.podspec
+++ b/WCDB.cpp.podspec
@@ -4,7 +4,7 @@
 # pod trunk push WCDB.cpp.podspec --verbose --skip-import-validation --allow-warnings
 Pod::Spec.new do |wcdb|
   wcdb.name         = "WCDB.cpp"
-  wcdb.version      = "2.1.8"
+  wcdb.version      = "2.1.9"
   wcdb.summary      = "WCDB is a cross-platform database framework developed by WeChat."
   wcdb.description  = <<-DESC
                       The WeChat Database, for C++. (If you want to use WCDB for Swift or Objective-C, see the "WCDB.swift" pod or "WCDB.objc" pod. If you want to use WCDB for C++/Objc/Swift in one project, see the "WCDB" pod)
diff --git a/WCDB.objc.podspec b/WCDB.objc.podspec
index 79397d68a..259180fec 100644
--- a/WCDB.objc.podspec
+++ b/WCDB.objc.podspec
@@ -4,7 +4,7 @@
 # pod trunk push WCDB.objc.podspec --verbose --skip-import-validation --allow-warnings
 Pod::Spec.new do |wcdb|
   wcdb.name         = "WCDB.objc"
-  wcdb.version      = "2.1.8"
+  wcdb.version      = "2.1.9"
   wcdb.summary      = "WCDB is a cross-platform database framework developed by WeChat."
   wcdb.description  = <<-DESC
                       The WeChat Database, for Objective-C. (If you want to use WCDB for Swift or C++, see the "WCDB.swift" pod or "WCDB.cpp" pod. If you want to use WCDB for C++/Objc/Swift in one project, see the "WCDB" pod)
diff --git a/WCDB.podspec b/WCDB.podspec
index e86aa1b67..7c574e439 100644
--- a/WCDB.podspec
+++ b/WCDB.podspec
@@ -4,7 +4,7 @@
 # pod trunk push --verbose --allow-warnings WCDB.podspec --skip-import-validation
 Pod::Spec.new do |wcdb|
   wcdb.name         = "WCDB"
-  wcdb.version      = "2.1.8"
+  wcdb.version      = "2.1.9"
   wcdb.summary      = "WCDB is a cross-platform database framework developed by WeChat."
   wcdb.description  = <<-DESC
                       The WeChat Database, for Objc/Swift/C++. (If you want to use WCDB for Objc/Swift/C++ separately, see the "WCDB.objc", "WCDB.swift" or "WCDB.cpp" pod.)
diff --git a/WCDB.swift.podspec b/WCDB.swift.podspec
index 71df21c85..c3f70f6f8 100644
--- a/WCDB.swift.podspec
+++ b/WCDB.swift.podspec
@@ -4,7 +4,7 @@
 # pod trunk push --verbose --allow-warnings WCDB.swift.podspec
 Pod::Spec.new do |wcdb|
   wcdb.name         = "WCDB.swift"
-  wcdb.version      = "2.1.8"
+  wcdb.version      = "2.1.9"
   wcdb.summary      = "WCDB is a cross-platform database framework developed by WeChat."
   wcdb.description  = <<-DESC
                       The WeChat Database, for Swift. (If you want to use WCDB for Objective-C or C++, see the "WCDB.objc" pod or "WCDB.cpp" pod. If you want to use WCDB for C++/Objc/Swift in one project, see the "WCDB" pod)