diff --git a/achainexchange-demo/pom.xml b/achainexchange-demo/pom.xml
index 849a6a0..c45fcac 100644
--- a/achainexchange-demo/pom.xml
+++ b/achainexchange-demo/pom.xml
@@ -29,7 +29,7 @@
 		<dependency>
 			<groupId>com.alibaba</groupId>
 			<artifactId>fastjson</artifactId>
-			<version>1.2.12</version>
+			<version>1.2.83</version>
 		</dependency>
 
 		<!-- achain2.0 sdk签名部分-->