diff --git a/package.json b/package.json
index 36cbf3c..bf886d7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "d3-color",
-  "version": "0.4.2",
+  "version": "0.5.0",
   "description": "Color spaces! RGB, HSL, Cubehelix, Lab and HCL (Lch).",
   "keywords": [
     "d3",