diff --git a/synch-service/pom.xml b/synch-service/pom.xml
index ec8c3bc..bf2e818 100644
--- a/synch-service/pom.xml
+++ b/synch-service/pom.xml
@@ -54,7 +54,7 @@
     <dependency>
       <groupId>com.alibaba</groupId>
       <artifactId>fastjson</artifactId>
-      <version>1.2.15</version>
+      <version>1.2.83</version>
     </dependency>
 
     <!--convert base64 doc to pdf require  -->