diff --git a/HISTORY.md b/HISTORY.md
index 27cf30c45..f03eaf796 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,5 +1,5 @@
-unreleased
-==========
+1.31.0 / 2017-10-25
+===================
 
   * Add `application/raml+yaml` with extension `.raml`
   * Add `application/wasm` with extension `.wasm`
diff --git a/package.json b/package.json
index 4f274337f..bb5e20b16 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "mime-db",
   "description": "Media Type Database",
-  "version": "1.30.0",
+  "version": "1.31.0",
   "contributors": [
     "Douglas Christopher Wilson <doug@somethingdoug.com>",
     "Jonathan Ong <me@jongleberry.com> (http://jongleberry.com)",