diff --git a/package.json b/package.json
index 3ecacef..350751f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jupyterview",
-  "version": "0.1.0",
+  "version": "0.4.0",
   "description": "A Jupyterlab VTK viewer extension.",
   "keywords": [
     "jupyter",