diff --git a/hcsim-content/gnbsim/gnbsim-impl/pom.xml b/hcsim-content/gnbsim/gnbsim-impl/pom.xml
old mode 100755
new mode 100644
index 39142a5..a1908db
--- a/hcsim-content/gnbsim/gnbsim-impl/pom.xml
+++ b/hcsim-content/gnbsim/gnbsim-impl/pom.xml
@@ -103,7 +103,7 @@
    <dependency>
 	<groupId>com.google.code.gson</groupId>
 	<artifactId>gson</artifactId>
-	<version>2.8.6</version>
+	<version>2.8.9</version>
    </dependency>
     </dependencies>
 </project>