diff --git a/package.json b/package.json
index 020928a..4138f55 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@vaadin/vaadin-progress-bar",
-  "version": "1.1.2",
+  "version": "1.2.0-alpha1",
   "description": "vaadin-progress-bar",
   "main": "vaadin-progress-bar.html",
   "repository": "vaadin/vaadin-progress-bar",
diff --git a/src/vaadin-progress-bar.html b/src/vaadin-progress-bar.html
index 968b781..9666851 100644
--- a/src/vaadin-progress-bar.html
+++ b/src/vaadin-progress-bar.html
@@ -90,7 +90,7 @@
         }
 
         static get version() {
-          return '1.1.2';
+          return '1.2.0-alpha1';
         }
       }