diff --git a/hbdm-java-sdk/pom.xml b/hbdm-java-sdk/pom.xml
index f486c53..5cfe56f 100644
--- a/hbdm-java-sdk/pom.xml
+++ b/hbdm-java-sdk/pom.xml
@@ -78,7 +78,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.1</version>
+            <version>2.8.9</version>
         </dependency>
 
         <!-- https://mvnrepository.com/artifact/commons-beanutils/commons-beanutils -->