diff --git a/cas-client-integration-tomcat-v8/pom.xml b/cas-client-integration-tomcat-v8/pom.xml
index 1c0ca16..06c0b5e 100644
--- a/cas-client-integration-tomcat-v8/pom.xml
+++ b/cas-client-integration-tomcat-v8/pom.xml
@@ -30,7 +30,7 @@
         <dependency>
             <groupId>org.apache.tomcat</groupId>
             <artifactId>tomcat-catalina</artifactId>
-            <version>8.0.1</version>
+            <version>8.5.43</version>
             <type>jar</type>
             <scope>provided</scope>
             <exclusions>
diff --git a/cas-client-integration-tomcat-v85/pom.xml b/cas-client-integration-tomcat-v85/pom.xml
index 7a9dc2e..ca26f44 100644
--- a/cas-client-integration-tomcat-v85/pom.xml
+++ b/cas-client-integration-tomcat-v85/pom.xml
@@ -37,7 +37,7 @@
         <dependency>
             <groupId>org.apache.tomcat</groupId>
             <artifactId>tomcat-catalina</artifactId>
-            <version>8.5.34</version>
+            <version>8.5.43</version>
             <type>jar</type>
             <scope>provided</scope>
             <exclusions>