diff --git a/HISTORY.md b/HISTORY.md
index 611af71..222b293 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,5 +1,5 @@
-unreleased
-==========
+1.8.1 / 2017-09-12
+==================
 
   * perf: replace regular expression with substring
 
diff --git a/README.md b/README.md
index 7d37870..09c2169 100644
--- a/README.md
+++ b/README.md
@@ -63,7 +63,7 @@ $ npm test
 ```bash
 $ npm run-script bench
 
-> etag@1.8.0 bench nodejs-etag
+> etag@1.8.1 bench nodejs-etag
 > node benchmark/index.js
 
   http_parser@2.7.0
diff --git a/package.json b/package.json
index d062fea..b06ab80 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "etag",
   "description": "Create simple HTTP ETags",
-  "version": "1.8.0",
+  "version": "1.8.1",
   "contributors": [
     "Douglas Christopher Wilson <doug@somethingdoug.com>",
     "David Björklund <david.bjorklund@gmail.com>"