diff --git a/chat-example/chat-vaadin-client/pom.xml b/chat-example/chat-vaadin-client/pom.xml
index 42fdc14..d9bfd8f 100644
--- a/chat-example/chat-vaadin-client/pom.xml
+++ b/chat-example/chat-vaadin-client/pom.xml
@@ -22,7 +22,7 @@
     <maven.compiler.source>1.8</maven.compiler.source>
     <maven.compiler.target>1.8</maven.compiler.target>
 
-    <jetty.plugin.version>9.3.9.v20160517</jetty.plugin.version>
+    <jetty.plugin.version>9.4.15.v20190215</jetty.plugin.version>
     <vaadin.version>8.1.6</vaadin.version>
     <!-- If there are no local customisations, this can also be "fetch" or "cdn" -->
     <vaadin.widgetset.mode>cdn</vaadin.widgetset.mode>