diff --git a/History.md b/History.md
index 03fbc985d..319634848 100644
--- a/History.md
+++ b/History.md
@@ -1,4 +1,10 @@
 
+2.13.4 / 2021-10-19
+==================
+
+**fixes**
+  * [[`dbc9c5a`](http://github.com/koajs/koa/commit/dbc9c5a47e2b2799cab403186fdb010df5df6f67)] - fix: Do not response Content-Length if Transfer-Encoding is defined (#1602) (Yiyu He <<dead_horse@qq.com>>)
+
 2.13.3 / 2021-09-24
 ==================
 
diff --git a/package.json b/package.json
index 827b289e6..3e46e7120 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koa",
-  "version": "2.13.3",
+  "version": "2.13.4",
   "description": "Koa web app framework",
   "main": "lib/application.js",
   "exports": {