diff --git a/pom.xml b/pom.xml
index 223aed0..1f1c21a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -54,7 +54,7 @@
     <maven.compiler.source>1.8</maven.compiler.source>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <vaadin.version>8.2.0</vaadin.version>
-    <undertow.version>1.4.21.Final</undertow.version>
+    <undertow.version>1.4.25.Final</undertow.version>
     <javax.servlet-api.version>4.0.0</javax.servlet-api.version>
     <selenium.version>3.8.1</selenium.version>
   </properties>