diff --git a/docs/bindings_lua.md b/docs/bindings_lua.md
index 33eb6771..cef89fa7 100644
--- a/docs/bindings_lua.md
+++ b/docs/bindings_lua.md
@@ -4,9 +4,13 @@ title: Reuse Lua Bindings
 order: 17
 ---
 
+!!!
+This feature is available in `v1.4.0` or higher.
+!!!
+
 pkpy provides a lua bridge to reuse lua bindings.
 It allows you to run lua code and call lua functions in python
-by embed a lua virtual machine.
+by embedding a lua virtual machine.
 
 Add `lua_bridge.hpp` and `lua_bridge.cpp` in [3rd/lua_bridge](https://github.com/blueloveTH/pocketpy/tree/main/3rd/lua_bridge) to your project.
 Make sure `lua.h`, `lualib.h` and `lauxlib.h` are in your include path
diff --git a/docs/retype.yml b/docs/retype.yml
index 6deb0e11..bb716186 100644
--- a/docs/retype.yml
+++ b/docs/retype.yml
@@ -3,7 +3,7 @@ output: .retype
 url: https://pocketpy.dev
 branding:
   title: pocketpy
-  label: v1.3.9
+  label: v1.4.0
   logo: "./static/logo.png"
 favicon: "./static/logo.png"
 meta:
diff --git a/include/pocketpy/common.h b/include/pocketpy/common.h
index 2ecdf6c0..8b370bc4 100644
--- a/include/pocketpy/common.h
+++ b/include/pocketpy/common.h
@@ -21,7 +21,7 @@
 #include <random>
 #include <deque>
 
-#define PK_VERSION				"1.3.9"
+#define PK_VERSION				"1.4.0"
 
 #include "config.h"
 #include "export.h"