diff --git a/package.json b/package.json
index 36618e85426..8e16e8c8f87 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ckeditor5",
-  "version": "0.11.0",
+  "version": "1.0.0-alpha.1",
   "description": "The development environment of CKEditor 5.",
   "keywords": [
     "CKEditor",