diff --git a/README.md b/README.md
index 3434afc..d7c1262 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 ![GitHub code size](https://img.shields.io/github/languages/code-size/ValKmjolnir/Nasal-Interpreter?style=flat-square&logo=github)
 ![GitHub release(latest by date)](https://img.shields.io/github/v/release/ValKmjolnir/Nasal-Interpreter?style=flat-square&logo=github)
-![in dev](https://img.shields.io/badge/dev-v11.1-blue?style=flat-square&logo=github)
+![in dev](https://img.shields.io/badge/dev-v11.2-blue?style=flat-square&logo=github)
 [![license](https://img.shields.io/badge/license-GPLv2-green?style=flat-square&logo=github)](./LICENSE)
 
 > This document is also available in: [__中文__](./doc/README_zh.md) | [__English__](./README.md)
diff --git a/doc/README_zh.md b/doc/README_zh.md
index b8eeb4e..26c4503 100644
--- a/doc/README_zh.md
+++ b/doc/README_zh.md
@@ -4,7 +4,7 @@
 
 ![GitHub code size](https://img.shields.io/github/languages/code-size/ValKmjolnir/Nasal-Interpreter?style=flat-square&logo=github)
 ![GitHub release(latest by date)](https://img.shields.io/github/v/release/ValKmjolnir/Nasal-Interpreter?style=flat-square&logo=github)
-![in dev](https://img.shields.io/badge/dev-v11.1-blue?style=flat-square&logo=github)
+![in dev](https://img.shields.io/badge/dev-v11.2-blue?style=flat-square&logo=github)
 [![license](https://img.shields.io/badge/license-GPLv2-green?style=flat-square&logo=github)](../LICENSE)
 
 > 这篇文档包含多语言版本: [__中文__](../doc/README_zh.md) | [__English__](../README.md)
diff --git a/doc/dev.md b/doc/dev.md
index 9d61ff6..6f1aca1 100644
--- a/doc/dev.md
+++ b/doc/dev.md
@@ -1,5 +1,7 @@
 # __Development History__
 
+![buringship](./pic/burningship.png)
+
 ## __Contents__
 
 * [__Parser__](#parser)
@@ -22,6 +24,7 @@
 * [__Release Notes__](#release-notes)
   * [v8.0](#version-80-release)
   * [v11.0](#version-110-release)
+  * [v11.1](#version-111-release)
 
 ## __Parser__
 
@@ -697,3 +700,11 @@ This bug is fixed in `v9.0`. So we suggest that do not use `v8.0`.
 9. Add `CMakeLists.txt` for cmake user(including `Visual Studio`).
 
 10. New ghost type register process.
+
+### __version 11.1 release__
+
+1. Bug fix: debugger in v11.0 is malfunctional.
+
+2. Bug fix: symbol_finder does not check definition in foreach/forindex loop.
+
+3. Change extension syntax `import.xx.xx` to `use xx.xx`.
diff --git a/doc/dev_zh.md b/doc/dev_zh.md
index 4a8fc24..baeb563 100644
--- a/doc/dev_zh.md
+++ b/doc/dev_zh.md
@@ -1,5 +1,7 @@
 # __开发历史记录__
 
+![buringship](./pic/burningship.png)
+
 ## __目录__
 
 * [__语法分析__](#语法分析)
@@ -22,6 +24,7 @@
 * [__发行日志__](#发行日志)
   * [v8.0](#version-80-release)
   * [v11.0](#version-110-release)
+  * [v11.1](#version-111-release)
 
 ## __语法分析__
 
@@ -630,3 +633,11 @@ in __`nasal_dbg.h:215`__: `auto canary=gc.stack+STACK_MAX_DEPTH-1;`
 9. 添加`CMakeLists.txt` (可在`Visual Studio`中使用)。
 
 10. 全新的自定义类型注册流程。
+
+### __version 11.1 release__
+
+1. Bug 修复: 修复 v11.0 的 debugger 无法启动的问题。
+
+2. Bug 修复: symbol_finder 不检查 foreach/forindex 中的迭代变量声明的问题。
+
+3. 扩展语法 `import.xx.xx` 改为 `use xx.xx`。
diff --git a/doc/nasal-http-test-web.html b/doc/nasal-http-test-web.html
index 0119175..234f247 100644
--- a/doc/nasal-http-test-web.html
+++ b/doc/nasal-http-test-web.html
@@ -36,7 +36,7 @@
         <div class="badges">
             <a href="https://github.com/ValKmjolnir/Nasal-Interpreter"><img src="https://img.shields.io/github/languages/code-size/ValKmjolnir/Nasal-Interpreter?style=flat-square&logo=github"></img></a>
             <a href="https://github.com/ValKmjolnir/Nasal-Interpreter"><img src="https://img.shields.io/github/v/release/ValKmjolnir/Nasal-Interpreter?style=flat-square&logo=github"></img></a>
-            <a href="https://github.com/ValKmjolnir/Nasal-Interpreter"><img src="https://img.shields.io/badge/dev-v10.0-blue?style=flat-square&logo=github"></img></a>
+            <a href="https://github.com/ValKmjolnir/Nasal-Interpreter"><img src="https://img.shields.io/badge/dev-v11.2-blue?style=flat-square&logo=github"></img></a>
             <a href="https://github.com/ValKmjolnir/Nasal-Interpreter"><img src="https://img.shields.io/badge/license-GPLv2-green?style=flat-square&logo=github"><br/></img></a>
         </div>
         <h2>&nbsp;Introduction | 介绍</h2>
@@ -79,13 +79,14 @@
                 在8.0版本中这个解释器需要跑超过2200秒来绘制这张图。
             </p>
             <p>
-                The figure below is the feigenbaum-figure generated by ppm script written in nasal.
+                The figure below is the feigenbaum-figure and burningship-figure generated by ppm script written in nasal.
             </p>
             <p>
-                下方是使用 nasal 的 ppm 生成脚本生成的 feigenbaum 图形。
+                下方是使用 nasal 的 ppm 生成脚本生成的 feigenbaum 和 burningship 图形。
             </p>
         </text>
         <img src="/doc/pic/feigenbaum.png" width="900" height="550" style="margin-left: 15px;"><br /></img>
+        <img src="/doc/pic/burningship.png" width="900" height="550" style="margin-left: 15px;"><br /></img>
         <h2>&nbsp;Example | 样例代码</h2>
         <form method="get">
             <text style="margin-left: 15px;"> </text>
diff --git a/test/httptest.nas b/test/httptest.nas
index 3b8fcaf..63f5a1d 100644
--- a/test/httptest.nas
+++ b/test/httptest.nas
@@ -322,7 +322,8 @@ while(1){
         elsif(path=="/doc/pic/nasal.png" or
             path=="/doc/pic/benchmark.png" or
             path=="/doc/pic/mandelbrot.png" or
-            path=="/doc/pic/feigenbaum.png")
+            path=="/doc/pic/feigenbaum.png" or
+            path=="/doc/pic/burningship.png")
             http.send(client,respond.ok(io.readfile("."~path)));
         else{
             var filename=substr(path,1,size(path)-1);