diff --git a/package.json b/package.json
index 3403658..18af9e5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "d3-time",
-  "version": "3.0.0",
+  "version": "3.1.0",
   "description": "A calculator for humanity’s peculiar conventions of time.",
   "homepage": "https://d3js.org/d3-time/",
   "repository": {