diff --git a/06_springboot_singlegame/pom.xml b/06_springboot_singlegame/pom.xml
index 0b05dba..fca656d 100644
--- a/06_springboot_singlegame/pom.xml
+++ b/06_springboot_singlegame/pom.xml
@@ -67,7 +67,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.2</version>
+            <version>2.8.9</version>
         </dependency>
         <!--<dependency>-->
             <!--<groupId>org.json</groupId>-->