diff --git a/lesson5-vaadin-intro/pom.xml b/lesson5-vaadin-intro/pom.xml
index 3263bd7..002d903 100644
--- a/lesson5-vaadin-intro/pom.xml
+++ b/lesson5-vaadin-intro/pom.xml
@@ -17,7 +17,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <java.version>1.8</java.version>
-        <vaadin.version>8.7.0</vaadin.version>
+        <vaadin.version>8.12.3</vaadin.version>
         <vaadin.widgetset.mode>local</vaadin.widgetset.mode>
     </properties>