diff --git a/chpl/chpl-service/pom.xml b/chpl/chpl-service/pom.xml
index f6c51139ed..1810d65533 100644
--- a/chpl/chpl-service/pom.xml
+++ b/chpl/chpl-service/pom.xml
@@ -363,7 +363,7 @@
         <dependency>
             <groupId>org.apache.tomcat</groupId>
             <artifactId>tomcat-catalina</artifactId>
-            <version>11.0.18</version>
+            <version>11.0.21</version>
             <scope>provided</scope>
         </dependency>