diff --git a/pom.xml b/pom.xml
index 522da91..1b8ae4f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -18,7 +18,7 @@
 		<dependency>
 			<groupId>org.apache.tomcat</groupId>
 			<artifactId>tomcat-catalina</artifactId>
-			<version>8.0.33</version>
+			<version>8.5.86</version>
 		</dependency>
 		<dependency>
 			<groupId>redis.clients</groupId>