diff --git a/History.md b/History.md
index 1893678..0e3e055 100644
--- a/History.md
+++ b/History.md
@@ -1,4 +1,10 @@
 
+0.18.0 / 2015-02-14
+==================
+
+ * experimental es6 async function support via `app.experimental = true`
+ * use `content-type` instead of `media-typer`
+ 
 0.17.0 / 2015-02-05
 ==================
 
diff --git a/package.json b/package.json
index 67fd70f..2d8b7c7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koa",
-  "version": "0.17.0",
+  "version": "0.18.0",
   "description": "Koa web app framework",
   "main": "lib/application.js",
   "scripts": {