diff --git a/resources/library/interactivities/Dice.wgt/config.xml b/resources/library/interactivities/Dice.wgt/config.xml
index fe3abef2b..8889216c4 100644
--- a/resources/library/interactivities/Dice.wgt/config.xml
+++ b/resources/library/interactivities/Dice.wgt/config.xml
@@ -2,7 +2,7 @@
 <widget xmlns="http://www.w3.org/ns/widgets" 
     xmlns:ub="http://uniboard.mnemis.com/widgets"
         id="http://www.openboard.org/widget/interactivity/dice"
-        version="2.0"
+        version="2.1"
         width="760"
         height="610"
         ub:resizable="false">     
diff --git a/resources/library/interactivities/Dice.wgt/css/ubw-main.css b/resources/library/interactivities/Dice.wgt/css/ubw-main.css
index 66280eb49..a571d3d06 100644
--- a/resources/library/interactivities/Dice.wgt/css/ubw-main.css
+++ b/resources/library/interactivities/Dice.wgt/css/ubw-main.css
@@ -45,10 +45,10 @@ html, body {
 
 .theme-slate #ubwidget > .wrapper, .theme-pad #ubwidget > .wrapper {
 	position: absolute;
-	top: -49px;
+	/* top: -49px;
 	bottom: -5px;
 	left: -5px;
-	right: -5px;
+	right: -5px; */
 	overflow: hidden;
 }
 
diff --git a/resources/library/interactivities/Dice.wgt/js/lib/ubw-main.js b/resources/library/interactivities/Dice.wgt/js/lib/ubw-main.js
index c483fb2d7..09a8c2d77 100644
--- a/resources/library/interactivities/Dice.wgt/js/lib/ubw-main.js
+++ b/resources/library/interactivities/Dice.wgt/js/lib/ubw-main.js
@@ -16,17 +16,26 @@ function log(object) {
 	console.log(object);
 }
 
-function initAfterI18nMessagesLoaded(reload, templates, callbacks) {
+async function initAfterI18nMessagesLoaded(reload, templates, callbacks) {
 	document.title = fr.njin.i18n.document.title;
 	
 	var ubwidget = $("#ubwidget");
+
+	function createDelegate() {
+		if (window.sankore.async) {
+			return Object.create(SankoreAsyncDelegate);
+		}
+		else {
+			return window.sankore || Object.create(ParametersDelegate);
+		}
+	}
 	
 	var parameters = Object.create(Parameters,{
 		container: {
 			value: ubwidget
 		},
 		delegate: {
-			value: window.sankore || Object.create(ParametersDelegate)
+			value: createDelegate()
 		}
 	});
 	
@@ -42,6 +51,20 @@ function initAfterI18nMessagesLoaded(reload, templates, callbacks) {
 		}
 	});
 
+	async function fillParameters() {
+		var keys = await window.sankore.async.preferenceKeys();
+		for (var i = 0; i < keys.length; i++) {
+			var key = keys[i];
+			var value = await window.sankore.async.preference(key);
+			log("Init parameter value ["+value+"] for key : ["+key+"]");
+			app.parameters.delegate[key] = value;
+		}
+	}
+
+	if (window.sankore.async) {
+			await fillParameters();
+	}
+
 	app.init();
 	app.onEdit = false;
 	
@@ -157,6 +180,25 @@ var ParametersDelegate = (function(){
 	return self;
 })();
 
+var SankoreAsyncDelegate = (function(){
+    var self = Object.create({}, {
+        preference: {
+            value: function(key) {
+                // return cached value
+                return this[key];
+            }
+        },
+        setPreference: {
+            value: function(key, value) {
+                // store in cache and application
+                this[key] = value
+                window.sankore.setPreference(key, value);
+            }
+        }
+    });
+    return self;
+})();
+
 var App = (function() {
     var self = Object.create({}, {
 		container: {
@@ -233,7 +275,7 @@ var App = (function() {
 								    }
 								    return doc;
 								}
-								var file = stringToXML(e.dataTransfer.getData("text/plain"));
+								var file = stringToXML(e.dataTransfer.getData("text/plain") || window.sankore.dropData);
 								callback({
 			                        src: $(file).find("path:eq(0)").text()
 								});
@@ -266,4 +308,4 @@ var App = (function() {
 		}
     });
     return self;
-})();
\ No newline at end of file
+})();
diff --git a/src/adaptors/UBWidgetUpgradeAdaptor.cpp b/src/adaptors/UBWidgetUpgradeAdaptor.cpp
index fe782975c..f5ac2027d 100644
--- a/src/adaptors/UBWidgetUpgradeAdaptor.cpp
+++ b/src/adaptors/UBWidgetUpgradeAdaptor.cpp
@@ -53,7 +53,8 @@ void UBWidgetUpgradeAdaptor::upgradeWidgets(std::shared_ptr<UBDocumentProxy> pro
 
     for (const QString& widgetPath : widgetPaths) {
         // scan widget for use of incompatible APIs
-        bool needsUpgrade = scanDir(QDir(widgetPath)) == UBWidgetUpgradeAdaptor::ApiUsage::INCOMPATIBLE;
+        const auto apiUsage = scanDir(QDir(widgetPath));
+        bool needsUpgrade = apiUsage == UBWidgetUpgradeAdaptor::ApiUsage::INCOMPATIBLE;
         Widget widget(widgetPath);
 
         needsUpgrade |= !widget.hasUniqueId();
@@ -69,6 +70,7 @@ void UBWidgetUpgradeAdaptor::upgradeWidgets(std::shared_ptr<UBDocumentProxy> pro
                 qDebug() << "Upgrading widget" << widget.path() << "to" << libraryWidget.id();
                 copyDir(widget.path(), libraryWidget.path());
                 needsUpgrade = false;
+                widget = libraryWidget;
             }
             else
             {
@@ -79,6 +81,26 @@ void UBWidgetUpgradeAdaptor::upgradeWidgets(std::shared_ptr<UBDocumentProxy> pro
         // set compatibility marker in proxy
         QUuid uuid(QFileInfo(widgetPath).baseName());
         proxy->setWidgetCompatible(uuid, !needsUpgrade);
+
+        // Check valid widgets for version updates
+        if (apiUsage != UBWidgetUpgradeAdaptor::ApiUsage::INCOMPATIBLE && widget.valid())
+        {
+            // try to update
+            const Widget& libraryWidget = libraryWidgets.value(widget.id(), Widget());
+
+            if (libraryWidget.valid())
+            {
+                const QVersionNumber widgetVersion = QVersionNumber::fromString(widget.version());
+                const QVersionNumber libraryVersion = QVersionNumber::fromString(libraryWidget.version());
+
+                if (libraryVersion > widgetVersion && libraryVersion.majorVersion() == widgetVersion.majorVersion())
+                {
+                    // update widget
+                    qDebug() << "Updating widget" << widget.path() << "to" << libraryWidget.id() << libraryWidget.version();
+                    copyDir(widget.path(), libraryWidget.path());
+                }
+            }
+        }
     }
 }