diff --git a/java-library/pom.xml b/java-library/pom.xml
old mode 100755
new mode 100644
index b1ce26b6..c715d90b
--- a/java-library/pom.xml
+++ b/java-library/pom.xml
@@ -124,7 +124,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.0</version>
+            <version>2.8.9</version>
         </dependency>
         <!-- rabbitmq -->
         <dependency>