diff --git a/index.dot b/index.dot
index 4bd9e85f4b..99873c8ac1 100644
--- a/index.dot
+++ b/index.dot
@@ -68,7 +68,7 @@
         <script type="text/javascript" src="src/store-ext.js"></script>
         <script type="text/javascript" src="src/actions-ext.js"></script>
         {{ } else { }}
-        <script type="text/javascript" src="dist/app.min.js?v=1.20.5"></script>
+        <script type="text/javascript" src="dist/app.min.js?v=1.21.0"></script>
         {{ } }}
 
         <script type="text/javascript">
diff --git a/src/store-ext.js b/src/store-ext.js
index 069133d62d..402b0d1766 100644
--- a/src/store-ext.js
+++ b/src/store-ext.js
@@ -8,7 +8,7 @@ NetsBloxSerializer.uber = SnapSerializer.prototype;
 SnapSerializer.prototype.isSavingHistory = true;
 
 NetsBloxSerializer.prototype.appName = 'NetsBlox';
-NetsBloxSerializer.prototype.version = '1.20.5';
+NetsBloxSerializer.prototype.version = '1.21.0';
 NetsBloxSerializer.prototype.app = NetsBloxSerializer.prototype.appName + ' ' +
     NetsBloxSerializer.prototype.version + ', http://netsblox.org';