diff --git a/nutanix-apidemo-csharp/NutanixAPIDemo/packages.config b/nutanix-apidemo-csharp/NutanixAPIDemo/packages.config
old mode 100755
new mode 100644
index c332ba7..7b04b84
--- a/nutanix-apidemo-csharp/NutanixAPIDemo/packages.config
+++ b/nutanix-apidemo-csharp/NutanixAPIDemo/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="10.0.3" targetFramework="net452" />
+  <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net452" />
 </packages>
\ No newline at end of file