diff --git a/Code/Tier1-PresentationLayer/pom.xml b/Code/Tier1-PresentationLayer/pom.xml
old mode 100755
new mode 100644
index 0c51218..1240f8f
--- a/Code/Tier1-PresentationLayer/pom.xml
+++ b/Code/Tier1-PresentationLayer/pom.xml
@@ -75,7 +75,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.5</version>
+            <version>2.8.9</version>
         </dependency>