diff --git a/History.md b/History.md
index a66efb9..1893678 100644
--- a/History.md
+++ b/History.md
@@ -1,4 +1,15 @@
 
+0.17.0 / 2015-02-05
+==================
+
+Breaking change if you're using an old version of node v0.11!
+Otherwise, you should have no trouble upgrading.
+
+ * official iojs support
+ * drop support for node.js `>= 0.11.0 < 0.11.16`
+ * use `Object.setPrototypeOf()` instead of `__proto__`
+ * update dependencies
+
 0.16.0 / 2015-01-27
 ==================
 
diff --git a/package.json b/package.json
index 26b5294..57ee2ae 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koa",
-  "version": "0.16.0",
+  "version": "0.17.0",
   "description": "Koa web app framework",
   "main": "lib/application.js",
   "scripts": {