diff --git a/History.md b/History.md
index 4de1741..256e9f7 100644
--- a/History.md
+++ b/History.md
@@ -1,4 +1,9 @@
 
+2.0.0 / 2015-11-19
+==================
+
+* update to koa v2 api (breaking koa v1)
+
 1.1.0 / 2014-01-14
 ==================
 
diff --git a/Readme.md b/Readme.md
index 8f28a0e..27867c7 100644
--- a/Readme.md
+++ b/Readme.md
@@ -3,6 +3,8 @@
 
  URL rewrite middleware for koa.
 
+___Notice: `koa-rewrite@2` supports `koa@2`, if you want to use this module with `koa@1`, please use `koa-rewrite@1`.___
+
 ## Installation
 
 ```js
diff --git a/package.json b/package.json
index 06093b7..118233b 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "koa-rewrite",
   "description": "URL rewrite middleware for koa",
   "repository": "koajs/rewrite",
-  "version": "1.1.0",
+  "version": "2.0.0",
   "scripts": {
     "test": "mocha test/test"
   },