diff --git a/package.json b/package.json
index 6fd6316..ecf1410 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vaadin-checkbox",
-  "version": "2.1.1",
+  "version": "2.2.0-alpha1",
   "description": "vaadin-checkbox",
   "main": "vaadin-checkbox.html",
   "repository": "vaadin/vaadin-checkbox",
diff --git a/src/vaadin-checkbox.html b/src/vaadin-checkbox.html
index f73896a..555ef50 100644
--- a/src/vaadin-checkbox.html
+++ b/src/vaadin-checkbox.html
@@ -113,7 +113,7 @@
         }
 
         static get version() {
-          return '2.1.1';
+          return '2.2.0-alpha1';
         }
 
         static get properties() {