diff --git a/java-tutorial/pom.xml b/java-tutorial/pom.xml
index c31bb90..4beab09 100644
--- a/java-tutorial/pom.xml
+++ b/java-tutorial/pom.xml
@@ -85,7 +85,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.5</version>
+            <version>2.8.9</version>
         </dependency>
         <dependency>
             <groupId>com.github.stuxuhai</groupId>