diff --git a/springboot-oauth2-authorization-server/pom.xml b/springboot-oauth2-authorization-server/pom.xml
index c56f94d..72b9ef1 100644
--- a/springboot-oauth2-authorization-server/pom.xml
+++ b/springboot-oauth2-authorization-server/pom.xml
@@ -58,7 +58,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.2</version>
+            <version>2.8.9</version>
         </dependency>
 
         <dependency>