diff --git a/packages/transitive-overlay/package.json b/packages/transitive-overlay/package.json
index eeb34a2f4..db1d0e8d8 100644
--- a/packages/transitive-overlay/package.json
+++ b/packages/transitive-overlay/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opentripplanner/transitive-overlay",
-  "version": "3.0.22",
+  "version": "4.0.0",
   "description": "A map overlay to show an itinerary based on transitive.js",
   "main": "lib/index.js",
   "module": "esm/index.js",