diff --git a/starfish-learn-spring/pom.xml b/starfish-learn-spring/pom.xml
index 3691b3a..6887b24 100644
--- a/starfish-learn-spring/pom.xml
+++ b/starfish-learn-spring/pom.xml
@@ -48,7 +48,7 @@
         <dependency>
             <groupId>org.apache.tomcat.embed</groupId>
             <artifactId>tomcat-embed-core</artifactId>
-            <version>8.5.34</version>
+            <version>8.5.51</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>