diff --git a/package.json b/package.json
index 7b45e2a..b2f2774 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@vaadin/vaadin-tabs",
-  "version": "3.0.5",
+  "version": "3.1.0-alpha1",
   "description": "vaadin-tabs",
   "main": "vaadin-tabs.html",
   "repository": "vaadin/vaadin-tabs",
diff --git a/src/vaadin-tab.html b/src/vaadin-tab.html
index 396e4d1..9f5b30b 100644
--- a/src/vaadin-tab.html
+++ b/src/vaadin-tab.html
@@ -48,7 +48,7 @@
         }
 
         static get version() {
-          return '3.0.5';
+          return '3.1.0-alpha1';
         }
 
         ready() {
diff --git a/src/vaadin-tabs.html b/src/vaadin-tabs.html
index 579a895..29e8ad8 100644
--- a/src/vaadin-tabs.html
+++ b/src/vaadin-tabs.html
@@ -152,7 +152,7 @@
         }
 
         static get version() {
-          return '3.0.5';
+          return '3.1.0-alpha1';
         }
 
         static get properties() {