diff --git a/main/adapter/pom.xml b/main/adapter/pom.xml
index aa60a0d..9f84334 100644
--- a/main/adapter/pom.xml
+++ b/main/adapter/pom.xml
@@ -41,7 +41,7 @@
         <dependency>
             <groupId>org.apache.tomcat.embed</groupId>
             <artifactId>tomcat-embed-core</artifactId>
-            <version>11.0.18</version>
+            <version>11.0.21</version>
         </dependency>
 
         <dependency>