diff --git a/reformulation-core/pom.xml b/reformulation-core/pom.xml
old mode 100755
new mode 100644
index fc0262f..cd93b6d
--- a/reformulation-core/pom.xml
+++ b/reformulation-core/pom.xml
@@ -130,7 +130,7 @@
         	<dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-                            <version>2.2.4</version>
+                            <version>2.8.9</version>
             
             <type>jar</type>
         </dependency>