diff --git a/package.json b/package.json
index c459da9..fd52c47 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "d3-queue",
-  "version": "3.0.3",
+  "version": "3.0.4",
   "description": "Evaluate asynchronous tasks with configurable concurrency.",
   "keywords": [
     "d3",