diff --git a/Core/pom.xml b/Core/pom.xml
old mode 100755
new mode 100644
index 8d6b5ba..bd768a1
--- a/Core/pom.xml
+++ b/Core/pom.xml
@@ -18,7 +18,7 @@
     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
-      <version>2.1</version>
+      <version>2.8.9</version>
     </dependency>
     <dependency>
       <groupId>org.javalite</groupId>