diff --git a/History.md b/History.md
index 4abb753..bae4eeb 100644
--- a/History.md
+++ b/History.md
@@ -9,6 +9,16 @@
  * improve linting
  * improve docs
 
+2.0.0-alpha.5 / 2016-08-10
+==================
+
+ * fix `ctx.flushHeaders()` to use `res.flushHeaders()` instead of `res.writeHead()`
+
+2.0.0-alpha.4 / 2016-07-23
+==================
+
+ * fix `response.writeable` during pipelined requests
+
 1.2.0 / 2016-03-03
 ==================
 
diff --git a/package.json b/package.json
index 25d99fe..6f49fb3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koa",
-  "version": "2.0.0-alpha.4",
+  "version": "2.0.0-alpha.5",
   "description": "Koa web app framework",
   "main": "lib/application.js",
   "scripts": {