diff --git a/study-netty/pom.xml b/study-netty/pom.xml
index 1f59386..161582f 100644
--- a/study-netty/pom.xml
+++ b/study-netty/pom.xml
@@ -34,7 +34,7 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.6.3</version>
+            <version>2.12.6.1</version>
         </dependency>
     </dependencies>