diff --git a/simple-dependencies/pom.xml b/simple-dependencies/pom.xml
index 2e55465..0d861f9 100644
--- a/simple-dependencies/pom.xml
+++ b/simple-dependencies/pom.xml
@@ -37,7 +37,7 @@
     <properties>
         <simple-framework.version>0.2-SNAPSHOT</simple-framework.version>
 
-        <jackson2.version>2.18.3</jackson2.version>
+        <jackson2.version>2.21.3</jackson2.version>
         <guava.version>33.6.0-jre</guava.version>
         <mybatis.version>3.5.19</mybatis.version>
         <mybatis-spring-boot-starter.version>4.0.1</mybatis-spring-boot-starter.version>