diff --git a/package.json b/package.json
index 2dad0eae3d..cbdb4ab4de 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@observablehq/plot",
   "description": "A JavaScript library for exploratory data visualization.",
-  "version": "0.3.2",
+  "version": "0.4.0",
   "author": {
     "name": "Observable, Inc.",
     "url": "https://observablehq.com"