diff --git a/java-in-action/niu--coder/pom.xml b/java-in-action/niu--coder/pom.xml
index e2479a3..534d491 100644
--- a/java-in-action/niu--coder/pom.xml
+++ b/java-in-action/niu--coder/pom.xml
@@ -11,7 +11,7 @@
         <dependency>
             <groupId>org.apache.tomcat.embed</groupId>
             <artifactId>tomcat-embed-core</artifactId>
-            <version>8.5.55</version>
+            <version>8.5.61</version>
         </dependency>
     </dependencies>