diff --git a/coursedemo/pom.xml b/coursedemo/pom.xml
index 2ac17a5..c747bea 100644
--- a/coursedemo/pom.xml
+++ b/coursedemo/pom.xml
@@ -51,7 +51,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.5</version>
+            <version>2.8.9</version>
         </dependency>
     </dependencies>