diff --git a/pulsar-admin-mcp-contrib/pom.xml b/pulsar-admin-mcp-contrib/pom.xml
index 35cb110..a2f74e2 100644
--- a/pulsar-admin-mcp-contrib/pom.xml
+++ b/pulsar-admin-mcp-contrib/pom.xml
@@ -29,7 +29,7 @@
 
     <properties>
         <spring-boot.version>3.5.3</spring-boot.version>
-        <jackson.version>2.17.2</jackson.version>
+        <jackson.version>2.18.6</jackson.version>
         <maven.compiler.source>17</maven.compiler.source>
         <maven.compiler.target>17</maven.compiler.target>
         <jetty.version>11.0.8</jetty.version>