diff --git a/package-lock.json b/package-lock.json
index b77ae68..6810426 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@polymer/iron-list",
-  "version": "3.0.2",
+  "version": "3.1.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index a71f44b..19ac0bf 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "generate-types": "gen-typescript-declarations --deleteExisting --outDir . --verify",
     "prepare": "npm run generate-types"
   },
-  "version": "3.0.2",
+  "version": "3.1.0",
   "main": "iron-list.js",
   "author": "The Polymer Authors",
   "dependencies": {