diff --git a/case 5.2 kafka/kafkastep2/pom.xml b/case 5.2 kafka/kafkastep2/pom.xml
index 05fb8656..aa108ef5 100644
--- a/case 5.2 kafka/kafkastep2/pom.xml	
+++ b/case 5.2 kafka/kafkastep2/pom.xml	
@@ -31,7 +31,7 @@
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>fastjson</artifactId>
-            <version>1.2.58</version>
+            <version>1.2.83</version>
         </dependency>
 
         <dependency>