diff --git a/util/pom.xml b/util/pom.xml
index 758a896..8d5261c 100644
--- a/util/pom.xml
+++ b/util/pom.xml
@@ -49,7 +49,7 @@
 		<dependency>
 			<groupId>org.apache.tomcat</groupId>
 			<artifactId>tomcat-catalina</artifactId>
-			<version>8.0.53</version>
+			<version>8.5.9</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>