diff --git a/ch15-1/ch15-1-core-service/pom.xml b/ch15-1/ch15-1-core-service/pom.xml
index 2655b1fe..b4457371 100644
--- a/ch15-1/ch15-1-core-service/pom.xml
+++ b/ch15-1/ch15-1-core-service/pom.xml
@@ -23,7 +23,7 @@
 		<dependency>
               <groupId>com.alibaba</groupId>
               <artifactId>fastjson</artifactId>
-              <version>1.2.33</version>
+              <version>1.2.83</version>
         </dependency>
     </dependencies>