diff --git a/package.json b/package.json
index 672d46c8..24e220e5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@soundworks/core",
-  "version": "4.0.0-alpha.20",
+  "version": "4.0.0-alpha.21",
   "description": "Open-source creative coding framework for distributed applications based on Web technologies",
   "authors": [
     "Benjamin Matuszewski",