diff --git a/structure-learn/serialization-learn/pom.xml b/structure-learn/serialization-learn/pom.xml
index cf805a8..1b05d67 100644
--- a/structure-learn/serialization-learn/pom.xml
+++ b/structure-learn/serialization-learn/pom.xml
@@ -32,7 +32,7 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.9.8</version>
+            <version>2.12.7.1</version>
         </dependency>
         <dependency>
             <groupId>com.google.protobuf</groupId>