diff --git a/package.json b/package.json
index 2110aaa3..bf11da1f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@balancer-labs/sor",
-    "version": "3.0.0-beta.1",
+    "version": "4.0.0-beta.0",
     "license": "GPL-3.0-only",
     "main": "dist/index.js",
     "module": "dist/index.esm.js",