diff --git a/rdfunit-webdemo/pom.xml b/rdfunit-webdemo/pom.xml
index ead1e5b4..0c23bfa6 100644
--- a/rdfunit-webdemo/pom.xml
+++ b/rdfunit-webdemo/pom.xml
@@ -14,7 +14,7 @@
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <vaadin.version>7.7.3</vaadin.version>
+    <vaadin.version>8.12.4</vaadin.version>
   </properties>
   <repositories>
     <repository>