diff --git a/HISTORY.md b/HISTORY.md
index 46eafcf..19e45a1 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,5 +1,5 @@
-unreleased
-==========
+2.1.31 / 2021-06-01
+===================
 
   * deps: mime-db@1.48.0
     - Add extension `.mvt` to `application/vnd.mapbox-vector-tile`
diff --git a/package.json b/package.json
index 407b4ce..a271000 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "mime-types",
   "description": "The ultimate javascript content-type utility.",
-  "version": "2.1.30",
+  "version": "2.1.31",
   "contributors": [
     "Douglas Christopher Wilson <doug@somethingdoug.com>",
     "Jeremiah Senkpiel <fishrock123@rocketmail.com> (https://searchbeam.jit.su)",