diff --git a/back-end-projects/OntSynHandler/pom.xml b/back-end-projects/OntSynHandler/pom.xml
index c477e472..fcb633dd 100644
--- a/back-end-projects/OntSynHandler/pom.xml
+++ b/back-end-projects/OntSynHandler/pom.xml
@@ -73,7 +73,7 @@
 		<dependency>
 			<groupId>com.alibaba</groupId>
 			<artifactId>fastjson</artifactId>
-			<version>1.2.31</version>
+			<version>1.2.83</version>
 		</dependency>
 
 		<dependency>