diff --git a/WebAPI/CSharp/FLY 4.5/FLY/packages.config b/WebAPI/CSharp/FLY 4.5/FLY/packages.config
index 3c9662a2..39a08800 100644
--- a/WebAPI/CSharp/FLY 4.5/FLY/packages.config	
+++ b/WebAPI/CSharp/FLY 4.5/FLY/packages.config	
@@ -30,5 +30,5 @@
  */-->
 <packages>
   <package id="Microsoft.Rest.ClientRuntime" version="2.3.6" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="6.0.8" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net45" />
 </packages>
\ No newline at end of file