diff --git a/chapter5/pom.xml b/chapter5/pom.xml
index d93bd13..135e69d 100644
--- a/chapter5/pom.xml
+++ b/chapter5/pom.xml
@@ -47,7 +47,7 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.10.0.pr1</version>
+            <version>2.12.6.1</version>
         </dependency>
         <!--测试-->
         <dependency>