diff --git a/package.json b/package.json
index d96d3a7..b9acd0b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@zeit/tracing-js",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "A partial implementation of the Opentracing JavaScript API for honeycomb.io backend",
   "main": "./dist/src/index.js",
   "types": "./dist/src/index.d.js",