diff --git a/csharp/src/Org.OpenAPITools.Test/packages.config b/csharp/src/Org.OpenAPITools.Test/packages.config
index a3a1bab..895b970 100644
--- a/csharp/src/Org.OpenAPITools.Test/packages.config
+++ b/csharp/src/Org.OpenAPITools.Test/packages.config
@@ -2,6 +2,6 @@
 <packages>
   <package id="NUnit" version="3.11.0" targetFramework="net45" />
   <package id="RestSharp" version="105.1.0" targetFramework="net45" developmentDependency="true" />
-  <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net45" developmentDependency="true" />
+  <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net45" developmentDependency="true" />
   <package id="JsonSubTypes" version="1.6.0" targetFramework="net45" developmentDependency="true" />
 </packages>