diff --git a/cas-client-integration-tomcat-v85/pom.xml b/cas-client-integration-tomcat-v85/pom.xml
index 0354af0..5a0d7f2 100644
--- a/cas-client-integration-tomcat-v85/pom.xml
+++ b/cas-client-integration-tomcat-v85/pom.xml
@@ -30,14 +30,14 @@
         <dependency>
             <groupId>org.apache.tomcat.embed</groupId>
             <artifactId>tomcat-embed-core</artifactId>
-            <version>8.5.16</version>
+            <version>8.5.34</version>
             <type>jar</type>
             <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.tomcat</groupId>
             <artifactId>tomcat-catalina</artifactId>
-            <version>8.5.16</version>
+            <version>8.5.34</version>
             <type>jar</type>
             <scope>provided</scope>
             <exclusions>