diff --git a/flink-topn/pom.xml b/flink-topn/pom.xml
index d6b6b49..7ca8680 100644
--- a/flink-topn/pom.xml
+++ b/flink-topn/pom.xml
@@ -73,7 +73,7 @@
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>fastjson</artifactId>
-            <version>1.2.62</version>
+            <version>1.2.83</version>
         </dependency>
 
         <!-- Add logging framework, to produce console output when running in the IDE. -->