diff --git a/optapp/pom.xml b/optapp/pom.xml
index 438d073..3ee8ef8 100644
--- a/optapp/pom.xml
+++ b/optapp/pom.xml
@@ -37,7 +37,7 @@
 	<dependency>
 			<groupId>com.google.code.gson</groupId>
 			<artifactId>gson</artifactId>
-			<version>2.8.5</version>
+			<version>2.8.9</version>
 	</dependency>
 	  
 	<!-- https://mvnrepository.com/artifact/org.apache.poi/poi -->