diff --git a/History.md b/History.md
index 3e2ce2a..4ab5657 100644
--- a/History.md
+++ b/History.md
@@ -1,4 +1,10 @@
 
+0.21.0 / 2015-05-23
+==================
+
+ * empty `request.query` objects are now always the same instance
+ * bump `fresh@0.3.0`
+
 0.20.0 / 2015-04-30
 ==================
 
diff --git a/package.json b/package.json
index 727c02f..25df07d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koa",
-  "version": "0.20.0",
+  "version": "0.21.0",
   "description": "Koa web app framework",
   "main": "lib/application.js",
   "scripts": {