diff --git a/History.md b/History.md
index e0aa9da..4a133da 100644
--- a/History.md
+++ b/History.md
@@ -1,4 +1,9 @@
 
+3.1.0 / 2017-02-20
+==================
+
+  * feat: timeout support humanize ms (#48)
+
 3.0.0 / 2016-12-20
 ==================
 
diff --git a/package.json b/package.json
index ba3b966..14f0fd6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "agentkeepalive",
-  "version": "3.0.0",
+  "version": "3.1.0",
   "description": "Missing keepalive http.Agent",
   "main": "index.js",
   "browser": "browser.js",