diff --git a/package.json b/package.json
index 8056bfa..4034085 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "d3-color",
-  "version": "3.0.1",
+  "version": "3.1.0",
   "description": "Color spaces! RGB, HSL, Cubehelix, Lab and HCL (Lch).",
   "homepage": "https://d3js.org/d3-color/",
   "repository": {