diff --git a/verigraph/pom.xml b/verigraph/pom.xml
old mode 100755
new mode 100644
index 9684667f..18972d23
--- a/verigraph/pom.xml
+++ b/verigraph/pom.xml
@@ -136,7 +136,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.0</version>
+            <version>2.8.9</version>
         </dependency>
         <!-- added to retrieve server path -->
         <!-- <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId>