diff --git a/src/main/java/org/apache/myfaces/blank/builder_pattern/tree/pom.xml b/src/main/java/org/apache/myfaces/blank/builder_pattern/tree/pom.xml
index 8e94440..5f0d0dd 100644
--- a/src/main/java/org/apache/myfaces/blank/builder_pattern/tree/pom.xml
+++ b/src/main/java/org/apache/myfaces/blank/builder_pattern/tree/pom.xml
@@ -28,7 +28,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.5</version>
+            <version>2.8.9</version>
         </dependency>