diff --git a/CMakeLists.txt b/CMakeLists.txt
index 15346dd..d2209c0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,7 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/Modules/")
 
 # The version number.
 set(ECO_VERSION_MAJOR 3)
-set(ECO_VERSION_MINOR 3)
+set(ECO_VERSION_MINOR 4)
 set(ECO_VERSION_PATCH 0)
 
 find_package(Libev REQUIRED)
diff --git a/README.md b/README.md
index ba78eb4..24d9b1a 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 [4]: https://github.com/zhaojh329/lua-eco/pulls
 [5]: https://img.shields.io/badge/Issues-welcome-brightgreen.svg?style=plastic
 [6]: https://github.com/zhaojh329/lua-eco/issues/new
-[7]: https://img.shields.io/badge/release-3.3.0-blue.svg?style=plastic
+[7]: https://img.shields.io/badge/release-3.4.0-blue.svg?style=plastic
 [8]: https://github.com/zhaojh329/lua-eco/releases
 [9]: https://github.com/zhaojh329/lua-eco/workflows/build/badge.svg
 
diff --git a/README_ZH.md b/README_ZH.md
index f684e74..a294d5c 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -6,7 +6,7 @@
 [4]: https://github.com/zhaojh329/lua-eco/pulls
 [5]: https://img.shields.io/badge/提问-欢迎-brightgreen.svg?style=plastic
 [6]: https://github.com/zhaojh329/lua-eco/issues/new
-[7]: https://img.shields.io/badge/发布版本-3.3.0-blue.svg?style=plastic
+[7]: https://img.shields.io/badge/发布版本-3.4.0-blue.svg?style=plastic
 [8]: https://github.com/zhaojh329/lua-eco/releases
 [9]: https://github.com/zhaojh329/lua-eco/workflows/build/badge.svg
 [11]: https://img.shields.io/badge/技术交流群-点击加入：153530783-brightgreen.svg