diff --git a/History.md b/History.md
index b01f3dd..b33b9e9 100644
--- a/History.md
+++ b/History.md
@@ -1,4 +1,10 @@
 
+0.5.5 / 2014-04-14
+==================
+
+ * fix length when .body is missing
+ * fix: make sure all intermediate stream bodies will be destroyed
+
 0.5.4 / 2014-04-12
 ==================
 
diff --git a/package.json b/package.json
index 7f256f8..7a65507 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koa",
-  "version": "0.5.4",
+  "version": "0.5.5",
   "description": "Koa web app framework",
   "main": "lib/application.js",
   "scripts": {