diff --git a/example/build.gradle b/example/build.gradle
index b4a2cc25a..b8e6c61af 100644
--- a/example/build.gradle
+++ b/example/build.gradle
@@ -22,7 +22,7 @@ plugins {
 }
 
 dependencies {
-    pluginLibsCompile 'org.apache.tomcat.embed:tomcat-embed-websocket:9.0.120'
+    pluginLibsCompile 'org.apache.tomcat.embed:tomcat-embed-websocket:9.0.121'
 }
 
 node {