diff --git a/.travis.yml b/.travis.yml
index 6d9715e1..70a8136a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,6 @@
 language: python
 python:
+  - "3.6"
   - "3.7"
   - "nightly"
 install:
diff --git a/README.md b/README.md
index f15eb566..34a3196c 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 <big>**写在最前，Cobra-W就像手中的一把剑，这把剑好不好用是Cobra-W的事，如何使用是你的事，希望能有更多的人参与到Cobra-W的变化中来...**</big>
 
-**请使用python3.7+运行该工具，已停止维护python2.7环境**
+**请使用python3.6+运行该工具，已停止维护python2.7环境**
 
 # Cobra-W
 [![GitHub (pre-)release](https://img.shields.io/github/release/LoRexxar/Cobra-W/all.svg)](https://github.com/LoRexxar/Cobra-W/releases)
diff --git a/cobra/__version__.py b/cobra/__version__.py
index abf4c611..9621888b 100644
--- a/cobra/__version__.py
+++ b/cobra/__version__.py
@@ -7,7 +7,7 @@
 __issue_page__ = 'https://github.com/LoRexxar/Cobra-W/issues/new'
 __python_version__ = sys.version.split()[0]
 __platform__ = platform.platform()
-__version__ = '1.8.2'
+__version__ = '1.9.0'
 __author__ = 'LoRexxar'
 __author_email__ = 'LoRexxar@gmail.com'
 __license__ = 'MIT License'
diff --git a/docs/changelog.md b/docs/changelog.md
index 0c6ff042..d62b9f4e 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -142,4 +142,9 @@
 - 2019-10-23
     - Cobra-W 1.8.2
     - 修复了针对chrome 插件扫描时无法扫描js的bug
-    - 添加了js美化代码模块以便于更好的扫描以及人工确认
\ No newline at end of file
+    - 添加了js美化代码模块以便于更好的扫描以及人工确认
+- 2019-11-04
+    - Cobra-W 1.9.0
+    - 将Python版本限制升级到3.6并添加多处异步优化
+    - 现在工具整体扫描效率优化了3倍左右
+    
\ No newline at end of file