diff --git a/HISTORY.md b/HISTORY.md
index a5f73c7..5070d22 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,5 +1,5 @@
-unreleased
-==========
+0.5.1 / 2016-11-12
+==================
 
   * Fix exception when `err.headers` is not an object
   * deps: statuses@~1.3.1
diff --git a/package.json b/package.json
index 4c55654..b866c3b 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "finalhandler",
   "description": "Node.js final http responder",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "author": "Douglas Christopher Wilson <doug@somethingdoug.com>",
   "license": "MIT",
   "repository": "pillarjs/finalhandler",