diff --git a/package.json b/package.json
index 1bf3446e2..6dd9479e5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ckeditor/ckeditor5-engine",
-  "version": "11.0.0",
+  "version": "12.0.0",
   "description": "The editing engine of CKEditor 5 – the best browser-based rich text editor.",
   "keywords": [
     "wysiwyg",