diff --git a/package.json b/package.json
index 2b73ed9..ce636c5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@vaadin/vaadin-time-picker",
-  "version": "0.1.0",
+  "version": "1.0.0-alpha1",
   "description": "vaadin-time-picker",
   "main": "vaadin-time-picker.html",
   "repository": "vaadin/vaadin-time-picker",
diff --git a/src/vaadin-time-picker.html b/src/vaadin-time-picker.html
index a52c864..99ff28f 100644
--- a/src/vaadin-time-picker.html
+++ b/src/vaadin-time-picker.html
@@ -84,7 +84,7 @@
           return 'vaadin-time-picker';
         }
         static get version() {
-          return '0.1.0';
+          return '1.0.0-alpha1';
         }
 
         static get properties() {